Attachment 0004 - PERFORMANCE SPECIFICATION MIL-PRF-32409 with AMD. 2 - 5.56mm SRTA M1037.pdf

CUI

MIL-PRF-32409

w/AMENDMENT 2 13 September 2022

SUPERSEDING

MIL-PRF-32409

w/AMENDMENT 1 24 October 2016

(U) PERFORMANCE SPECIFICATION

(U) CARTRIDGE, 5.56 MILLIMETER, SHORT RANGE TRAINING – M1037

(U) This specification is approved for use by all Departments and Agencies of the Department of Defense, within the distribution limitations noted at the bottom of the page.

AMSC N/A FSC 1305

DISTRIBUTION STATEMENT D. Distribution authorized to the Department of Defense and U.S. DoD contractors only to protect technical or operational data as determined on 13 September 2023. Other requests for this document shall be referred to the Office of the Project Manager for Maneuver Ammunition Systems, ATTN: SFAE-AA-MAS, Picatinny Arsenal, NJ 07806-5000.

WARNING – This document contains technical data whose export is restricted by the Arms Export Control Act (Title 22, U.S.C., Sec 2751, et. seq.) or the Export Administration Act of 1979, as amended, Title 50, U.S.C., App. 2401 et. seq. Violations of these export laws are subject to severe criminal penalties. Disseminate in accordance with provisions of DoD Directive 5230.25.

DESTRUCTION NOTICE: Destroy by any method that will prevent disclosure of contents or reconstruction of this document.

Comments, suggestions, or questions on this document should be addressed to: Commander, U.S. Army DEVCOM AC, ATTN: FCDD-ACE-QSA, Picatinny Arsenal, New Jersey 07806- 5000 or emailed to usarmy.pica.devcom-ac.list.ardec-stdzn-branch@army.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https://assist.dla.mil.

INCH-POUNDS

Controlled by: DEVCOM AC Controlled by: FCDD-ACE-QSA CUI Category: CTI, EXPT Distribution Statement: D POC: Standardization Office, Email: usarmy.pica.devcom-ac.list.ardec-stdzn-branch@army.mil https://assist.dla.mil/

1. (U) SCOPE

1.1. (U) Scope. This specification prescribes the performance requirements and identifies the verification procedures for the Cartridge, 5.56mm Short Range Training Ammunition, M1037 hereafter referred to simply as SRTA.

1.2. (U) Type-designator. The Army type-designator M1037 referenced in this specification is of Army origin and does not reflect a particular design (see 6.15).

2. (CUI) APPLICABLE DOCUMENTS

2.1. (U) General. The documents listed in this section are specified in sections 3 or 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3 and 4 of this specification, whether or not they are listed.

2.2. (U) Government Documents

2.2.1. (U) Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

(CUI) FEDERAL STANDARDS

SAE-AMS-STD-595/35109 Blue, Flat SAE-AMS-STD-595/35180 Blue, Flat SAE-AMS-STD-595/35183 Blue, Flat SAE-AMS-STD-595/35250 Blue, Flat

(CUI) DEPARTMENT OF DEFENSE SPECIFICATIONS

MIL-PRF-372 Cleaning Compound Solvent (for Bore of Weapons) MIL-PRF-680 Degreasing Solvent MIL-PRF-2104 Lubricating Oil, Internal Combustion Engine, Combat/Tactical

Service MIL-DTL-12560 Armor Plate, Steel, Wrought, Homogenous (for Use in Combat-

Vehicles and Ammunition Testing) MIL-PRF-14107 Lubricating Oil, Weapons, Low Temperature MIL-PRF-46000 Lubricant, Semi-fluid (Automatic Weapons)

MIL-PRF-63460 Cleaner, Lubricant and Preservative for Weapons and Weapon Systems

(CUI) DEPARTMENT OF DEFENSE STANDARDS

MIL-STD-286 Propellants, Solid: Sampling, Examination, and Testing MIL-STD-636 Visual Inspection Standards for Small Arms Ammunition through

Caliber .50 MIL-STD-810 Environmental Engineering Considerations and Laboratory Tests MIL-STD-882 System Safety MIL-STD-1168 Ammunition Lot Numbering and Ammunition Data Card MIL-STD-1916 DOD Preferred Methods for Acceptance of Product MIL-STD-644 Visual Inspection Standards and Inspection Procedures for

Packaging, Packing and Marking of Small Arms Ammunition.

(U) (Copies of these documents are available online at https://quicksearch.dla.mil/)

(CUI) U.S. ARMY DEVELOPMENT COMMAND ARMAMENT CENTER

(DEVCOM AC) SPECIFICATIONS

DTL13038145 - Detail Specification, Item Specification for the Multi-Small Caliber Ammunition Test Procedures (M-SCATP)

(U) (Application for copies should be sent to usarmy.pica.devcom-ac.list.qesa-qem-d@army.mil)

2.2.2. (U) Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract.

(CUI) DEPARTMENT OF DEFENSE TECHNICAL BULLETIN

TB 700-2 Department of Defense Ammunition and Explosives Hazard Classification

Procedures

(U) (This document is available online at https://ent.ldac.army.mil/etmapp)

(CUI) DEPOT MAINTENANCE WORK REQUIREMENTS

DMWR 9-1300-0017-D1 Depot Maintenance Work Requirements for Demilitarization of Miscellaneous Small Arms

Ammunition

(U) (Request for copies should be sent to ROCK-AMSJM-LID@conus.army.mil) mailto:ROCK-AMSJM-LID@conus.army.mil

(CUI) US ARMY DEVELOPMENTAL TEST COMMAND

ITOP 4-2-601 Drop Tests for Munitions ITOP 4-2-602 Rough Handling Tests TOP 1-2-608 Sound Level Measurements TOP 2-2-614 Toxic Hazards Test for Vehicles and Other Equipment TOP 3-2-045 Small Arms - Hand and Shoulder Weapons and Machineguns TOP 3-2-609 Chemical Compatibility of Nonmetallic Materials Used in Small Arms

(U) (Copies of these documents may be found online at https://www.atec.army.mil/publications/documents.html)

(CUI) U.S. ARMY DEVELOPMENT COMMAND ARMAMENT CENTER

(DEVCOM AC) DRAWINGS

7643674 Classification of Cartridge Case Defects for Small Arms Ammunition 8421679 M31A2, Trainfire Target Holding Mechanism 8649409 Barrel, Test, Accuracy, 5.56mm 10520006 Ball, 3.94 Oz 11691287 Link, Cartridge, Metallic Belt, 5.56mm, M27 12002898 “E” Polyethylene Silhouette Target 13028354 Cartridge, 5.56mm Short Range, M1037

13028355 COAI CRTG 5.56MM SR, M1037 PK 10 CRTGS/CL, 10RD

13028356 COAI CRTG 5.56MM SR, M1037 LK: PK 200 CRTGS/BELT

12551963 Packing and Marking for Box, Wirebound for Cartridge, 5.56mm 12590217 Packing and Marking for Wirebound Box for PA108 Ammunition

Container

(U) (Request for copies should be sent to pica.Drawing.Request@conus.army.mil.)

(CUI) ENVIRONMENTAL PROTECTION AGENCY (EPA)

EPA 550-B-01-003 List of Lists; Consolidated List of Chemicals, Subject to the EPCRA and Sec 112 of the Clean Air Act

(U) (Copies of the publication are available from https://www.epa.gov)

(CUI) NAVAL INSTRUCTIONS

NAVSEAINST 8020.19 Electrostatic Discharge Safety Program For Ordnance

(U) (Copies of NAVSEA instructions are available online at https://navsea.navy.deps.mil/)

(CUI) DEFENSE AMMUNITION CENTER

https://www.atec.army.mil/publications/documents.html https://www.epa.gov/ https://navsea.navy.deps.mil/

19-48-4116/5 Unitization Procedures for Boxed Ammunition and Components on 4-Way Pallets

(U) (Copies of the drawing are available from Defense Ammunition Center, https://goordnance.army.mil/dac/dac.html.)

2.3. (U) Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

3. (CUI) REQUIREMENTS

3.1. (CUI) Design verification. When specified (see 6.2), a sample of the SRTA cartridges shall be subjected to design verification in accordance with 4.1, and TABLES III, IV, VII, and VIII.

3.1.1. (CUI) Product uniformity of key characteristics. The key characteristics of the design that are deemed essential to meet performance, safety, and reliability requirements shall be identified and variability limits or baselines shall be established during design verification.

The variability of key characteristics for the cartridges submitted for lot acceptance shall conform to the baseline established for them during design verification (see 6.5).

3.1.2. (CUI) Classification of defects. Defects inherent to the cartridge design that are not already listed in TABLE VII shall be identified during design verification and shall be classified as either a minor, major, or critical defect in accordance with MIL-STD-1916.

3.2. (CUI) First article inspection. When specified (see 6.2), a sample of the SRTA cartridges shall be subjected to first article inspection in accordance with 4.2, and TABLES III, V, VII, and VIII.

3.3. (CUI) Conformance inspection. When specified (see 6.2), a sample of the SRTA cartridges shall be subjected to conformance inspection in accordance with 4.3, and TABLES III, VI, VII, and VIII.

3.4. (CUI) Interface and interoperability requirements.

3.4.1. (CUI) Cartridge. The cartridge shall comply with the dimension requirements of drawing 13028354. The cartridge shall be free of lead and other toxic materials for part number 13028354-2.

3.4.2. (CUI) Weapon compatibility. The cartridge shall be functionally compatible with the standard issued weapons listed in TABLE I. Weapon compatibility includes, but is not limited to, being capable of being linked with M27 links conforming to11691287, loaded, chambered, fired, and extracted after firing without binding or causing damage to the weapon and without cartridge induced malfunctions.

(CUI) TABLE I. Weapons

Weapon NSN Configuration M4 Carbine 1005-01-231-0973 Standard

M16A4 Rifle 1005-01-383-2872 Standard M249 Squad Automatic Weapon (SAW)* 1005-01-127-7510 Standard

* The M249 SAW shall be used with the standard barrel unless otherwise stated.

3.4.3. (CUI) Cartridge identification.

3.4.3.1. (CUI) Head stamp. The cartridge case head stamp shall consist of a visible

Identification Code of the Manufacturer and the last two digits of the year of manufacture.

3.4.3.2. (CUI) Exterior color. The cartridge exterior color shall be:

a. Blue in accordance with SAE-AMS-STD-595/35109, /35180, /35183, or

/35250

b. The specific blue shall be established during design verification, and shall not be altered for first article and conformance verification testing.

c. The coloring shall cover the tip area and at least 25 percent of the exposed projectile surface area.

d. The blue shall be visible when linked with M27.

3.5. (CUI) Operating requirements. Each cartridge shall provide the following functional, operational, and performance capabilities when fired from any of the designated weapons listed in TABLE I, without any additional ancillary devices, sighting systems, or modifications.

3.5.1. (CUI) Primed case sensitivity. The value of the average height (h) and standard deviation (s) of the height of fire functioning by a 3.94 ± 0.02 ounce steel ball conforming to 10520006 shall be such that h + 3(s) shall be not greater than 12 inches and h – 3(s) shall be not less than 2 inches.

3.5.2. (CUI) Velocity. The design velocity shall be established during design verification. It is the mean velocity (corrected) obtained at ambient temperature testing (see 4.5).

a. For first article and conformance verification testing, when conditioned and fired at ambient (see 4.5), the mean velocity shall not vary by more than ± 3 percent from the design velocity.

b. The average velocity of the cartridge conditioned and fired at hot or cold (see 4.5) shall not vary by more than ± 10 percent from the mean velocity of the lot being tested at ambient.

3.5.3. (CUI) Chamber pressure.

a. The average chamber pressure of the cartridges conditioned and fired at ambient temperature (see 4.5) shall be not greater than 58,700 psi (405 MPa).

b. The average chamber pressure of the cartridges conditioned and fired at hot or cold temperatures (see 4.5) shall not vary from the average chamber pressure obtained at ambient of the sample by greater than ±7,000 psi (48 MPa).

c. The chamber pressure of any individual cartridge or the average chamber pressure plus three standard deviations shall be not greater than 64,700 psi (446 MPa).

3.5.4. (CUI) Action time. The action time of the cartridge conditioned and fired at cold, ambient, or hot (see 4.5) shall be not greater than 3 milliseconds (ms).

3.5.5. (CUI) Bullet extraction. The average force required to separate the bullet from the cartridge case shall be not less than 35 lbf (155.7 N).

3.5.6. (CUI) Residual stress. The cartridge case shall not split or crack when subjected to a residual stress test.

3.5.7. (CUI) Dispersion. When fired from an accuracy barrel at ambient temperature (see 4.5) at a target situated 100 m from the muzzle, the average mean radius of the impact of 10 rounds shall be not greater than 3.54 inches (9 cm).

3.5.8. (CUI) Cartridge noise level. When the cartridge is functioned, the impulse noise limit for the operator shall be not greater than 164 decibels and the duration shall be not greater than 20 ms.

3.5.9. (CUI) Functional reliability. The cartridge shall have a functional reliability of not less than .9947 with a confidence level of 80 percent throughout the temperature range of -4°F (-20°C) to +104°F (+40°C) when fired in the required weapons (see 6.12).

3.5.10. (CUI) Function and casualty. The cartridges shall function without casualty at the temperature conditions in the required weapons between -4°F (-20°C) and +104°F (+40°C).

3.5.11. (CUI) Bullet integrity. The bullet of the cartridge shall not burst or fragment in the barrel or during its flight.

3.5.12. (CUI) Target kill. When the cartridge is fired at an E-type silhouette target situated at a range of 100 m, the projectile shall activate the standard target mechanism and mark the target sufficiently to indicate a target hit (see 6.11.1).

3.5.13. (CUI) Toxic fumes. The toxic fumes produced by the M1037 cartridge shall be not greater than those produced by firing similar quantities of M855 Ball 5.56mm ammunition.

3.5.14. (CUI) Fragmentation. The projectile or projectile fragments shall not ricochet back more than 5 m when fired directly at plywood and steel targets.

3.5.15. (CUI) Fouling. The fouling produced by firing cartridges in the M4 Carbine, M16A4 Rifle, and M249 SAW shall not cause any weapon stoppages, and any residue shall be readily removable using standard cleaning methods.

3.5.16. (CUI) Accuracy match. When the cartridge is fired at an E-type silhouette target situated at a range of 100 m, 90% of the projectiles shall hit the target while firing center mass with an accuracy barrel zeroed with M855 Ball 5.56mm ammunition.

3.5.17. (CUI) Maximum range. The maximum range of the cartridge shall be not greater than 656.2 yd (600 m). All projectiles fired at the maximum range shall impact the ground within a safety fan defined by the Surface Danger Zone, established during design verification (see 6.2).

3.6. (CUI) Environmental requirements.

3.6.1. (CUI) Propellant stability. The propellant of the cartridge shall meet the following stability requirements:

a. A 2.5 g sample of single base propellant shall withstand a temperature of 134.5°C for 40 minutes without triggering a reaction, and for not less than 5 hours without igniting/exploding.

b. A 2.5 g sample of double base propellant shall withstand a temperature of 120°C for 40 minutes without triggering a reaction, and for not less than 1 hour without liberating observable fumes.

c. A 45 g sample of propellant shall withstand not less than 30 days storage, at 65.5° C, without liberating observable fumes.

3.6.2. (CUI) Waterproofness. After cartridges have been submerged in ambient water for

24 hours (minimum one inch of water above the cartridge), and then fired, the cartridges shall have a mean velocity that does not vary by more than ±98 ft/s (±30 m/s) from the mean baseline velocity at ambient (see 3.5.2).

3.6.3. (CUI) Sequential rough handling. Cartridges shall be capable of withstanding the rigors of the sequential rough handling and transportation throughout the temperature range of - 60°F (-51°C) and +145°F (63°C), and shall meet all safety and performance requirements.

Cartridges shall be exposed to the following conditions in this specified sequential order.

a. 2.1 Meter drop test

b. Loose cargo test

c. 1.5 Meter drop test

3.6.4. (CUI) 12 Meter drop. When packaged in accordance with the packaging provisions of the contract, the cartridge shall not detonate or burn, lose propellant, and shall be safe to handle for disposal when subjected to the 40 ft (12.2 m) drop without injury to personnel.

3.6.5. (CUI) Long term high temperature storage. After being subjected to 28 days of continuous heating at 160°F ± 2°F (71°C ± 1.1°C), the cartridge shall be safe to store and fire with no critical defects as defined in TABLE VIII.

3.6.6. (CUI) Long term low temperature storage. After being subjected to 28 days of continuous cooling at -60°F ± 2°F (-51°C ± 1.1°C) the cartridge shall be safe to store and fire with no critical defects as defined in TABLE VIII.

3.6.7. (CUI) Humidity. The cartridge shall be safe to store and fire after being subjected to a 10-day temperature/humidity cycle.

3.6.8. (CUI) Cook-off. A cartridge inserted into the chamber of the weapon immediately following the firing of defined amounts of cartridges in the weapon, in accordance with TABLE II, shall not fire (cook off) and be clearable after 30 minutes of the round being chambered.

(CUI) TABLE II. Cook-off test quantities

Weapon Type Rounds Fired Rate of Fire M16A4 Rifle 180 85 spm M4 Carbine 180 85 spm

M249 SAW, Standard barrel 350 100 spm

3.6.9. (CUI) Attitude. The cartridge shall be safe to fire and the reliability shall not degrade by more than 10% (see 6.12) after being subjected to firing conditions of ± 80° from perpendicular at ambient temperature (see 4.5).

3.6.10. (CUI) Barrel erosion. The SRTA shall not degrade the M249 barrel life to less than 10,000 rounds. The barrel life shall be considered as having ended when the average velocity of an individual burst (20 round group) in the test drops 200 ft/s (61 m/s) or more with respect to the velocity of the initial test.

3.6.11. (CUI) Electrostatic discharge (ESD).

a. In Personnel-borne environments (25 ± 1.2 kilovolts electrostatic discharge), the cartridge shall be operational and reliable without burning or exploding.

b. In Helicopter-borne packaged environments (300 ± 15 kilovolts electrostatic discharge), the cartridge shall be operational without burning or exploding.

3.6.12. (CUI) Salt fog. The cartridge shall be safe to store and fire after exposure to 96 hours of alternating 24 hour periods of salt fog environment as specified in MIL-STD-810.

3.6.13. (CUI) Chemical compatibility. The cartridges shall meet safety requirements and function after exposure to the chemicals and lubricants commonly used in military environments.

3.7. (CUI) Support and ownership requirements.

3.7.1. (CUI) Safety analysis. A safety analysis of the cartridge shall be completed in accordance with MIL-STD-882.

3.7.2. (CUI) Final hazard classification (FHC). The cartridge shall comply with the following hazard classification when packaged in accordance with packaging provisions of the contract or purchase order.

DOD Hazard Class/Div/SCG: 1.4S DOT Hazard Class: 1.4S DOT Label: Explosive 1.4S

3.7.3. (CUI) Energetic material qualification. All energetic materials used in the cartridge shall be intended for the military use (see 6.14).

3.7.4. DELETED

3.7.5. (CUI) Demilitarization.

a. The cartridge shall be able to be demilitarized in accordance with procedures in Depot Maintenance Work Requirements DMWR 9-1300-0017-D1.

b. The use of hazardous materials as specified in Environmental Protection Agency (EPA) 550-B-01-003; List of Lists shall not be used (see 6.2).

3.7.6. (CUI) Lot numbering. Each lot, consisting of M1037 SRTA cartridges only, shall be identified by a lot number in accordance with MIL-STD-1168 (see 6.2).

3.7.7. (CUI) Workmanship. All items shall be free of defects identified in TABLE VII, as well as burrs, chips, flashing, voids, sharp edges, wrinkles, deep draw scratches, scaly metal, cracks, dirt, grease, rust and other imperfections. Cartridges shall be free of foreign material including, but not limited to, corrosion, stains, oil, sealant smears and metal chips.

4. (CUI) VERIFICATION

(CUI) TABLE III. Requirement/verification cross-reference matrix

Method of Verification

1. Analysis

2. Demonstration

3. Examination

4. Test

Classes of Verification A – Design Verification B – First Article C – Conformance

Requirements Verification

Methods Verification

Class Section 4 Verification Procedures 1 2 3 4 A B C

3.1 Design verification X X X X X 4.1, TABLE IV

3.1.1 Product uniformity X X X X X X 4.1.1

3.2 First article inspection X X X X X 4.2, TABLE V

3.3 Conformance inspection X X X X X 4.3, TABLE VI

3.4.1 Cartridge X X X X 4.4.1

3.4.2 Weapon compatibility X X X X X 4.4.2

3.4.3.1 Head stamp X X X X 4.4.3.1

3.4.3.2 Exterior color X X X X 4.4.3.2

3.5.1 Primed case sensitivity X X X X X 4.5.1

3.5.2 Velocity X X X X X 4.5.2

3.5.3 Chamber pressure X X X X X 4.5.3

3.5.4 Action time X X X X X 4.5.4

3.5.5 Bullet extraction X X X X X 4.5.5

3.5.6 Residual stress X X X X X 4.5.6

3.5.7 Dispersion X X X X 4.5.7

3.5.8 Cartridge noise level X X 4.5.8

3.5.9 Functional reliability X X X X 4.5.9

3.5.10 Function and casualty X X X X 4.5.10

3.5.11 Bullet integrity X X X X 4.5.11

3.5.12 Target kill X X X X 4.5.12

3.5.13 Toxic fumes X X X 4.5.13

3.5.14 Fragmentation X X 4.5.14

3.5.15 Fouling X X X 4.5.15

3.5.16 Accuracy match X X X 4.5.16

3.5.17 Maximum range X X X 4.5.17

3.6.1 Propellant stability X X X X X 4.6.1

3.6.2 Waterproofness X X X X 4.6.2

3.6.3 Sequential rough handling X X X X 4.6.3

(CUI) TABLE III. Requirements/verification cross reference matrix – Continued

Requirements Verification

Methods Verification

Class Section 4 Verification Procedures

1 2 3 4 A B C

3.6.4 12 Meter drop X X X X 4.6.4

3.6.5 Long term high temp storage X X X X 4.6.5

3.6.6 Long term low temp storage X X X X 4.6.6

3.6.7 Humidity X X X X 4.6.7

3.6.8 Cook-off X X X X 4.6.8

3.6.9 Attitude X X 4.6.9

3.6.10 Barrel erosion X X 4.6.10

3.6.11 ESD X X X 4.6.11

3.6.12 Salt fog X X X X 4.6.12

3.6.13 Chemical compatibility X X X X 4.6.13

3.7.1 Safety analysis X X X X 4.7.1

3.7.2 Final hazard classification X X X 4.7.2

3.7.3 Energetic material qualification X X X X 4.7.3

3.7.4 DELETED

3.7.5 Demilitarization X X X 4.7.5

3.7.6 Lot numbering X X X 4.7.6

3.7.7 Workmanship X X X X 4.7.7

5.1/

5.2 Packaging X X X X 4.7.8

4.1. (CUI) Design verification. When specified, a sample of cartridges shall undergo design verification by analysis, demonstration, examination, and test in accordance with TABLE III, IV, VII, and VIII, and applicable paragraphs within this section.

4.1.1. (CUI) Product uniformity of key characteristics. Verify by examination of objective evidence and analysis that all key characteristics have been identified and valid variability limits have been established. A minimum of 5 sets of components, subassemblies and assemblies shall be subjected to a physical configuration audit (PCA) to establish a product uniformity baseline for the key characteristic identified in section 3 (see 6.11.2).

4.1.2. (CUI) Classification of defects. Verify by examination of objective evidence and analysis that all design specific inherent defects have been identified and correctly classified, based on safety, and possible consequence of deficiency (see 6.11.2).

4.1.3. (CUI) Design verification rejection. If any item of the sample fails to comply with any design verification requirement specified, the design shall be rejected.

(CUI) TABLE IV. Design verification tests and inspection

Examination or Test Qty Requirement Paragraph

Inspection Method

Notes 1/

Weapon Used M4 M16 M249

Product uniformity - 3.1.1 4.1.1 Cartridge - 3.4.1 4.4.1 Weapon compatibility - 3.4.2 4.4.2 Head stamp - 3.4.3.1 4.4.3.1 2/ Exterior color - 3.4.3.2 4.4.3.2 2/ Primed case sensitivity 500 3.5.1 4.5.1 Velocity 120 3.5.2 4.5.2 3/,4/ EPVAT barrel Chamber pressure 120 3.5.3 4.5.3 3/,4/ EPVAT barrel Action time 120 3.5.4 4.5.4 3/,4/ EPVAT barrel Bullet extraction 100 3.5.5 4.5.5 Residual stress 100 3.5.6 4.5.6 Dispersion 300 3.5.7 4.5.7 Accuracy barrel Cartridge noise level 9 3.5.8 4.5.8 3 3 3 Functional reliability - 3.5.9 4.5.9 5/ Function and casualty 49,200 3.5.10 4.5.10 6/,7/ 15000 14400 19800 Bullet integrity 3,300 3.5.11 4.5.11 6/,8/ 3300 Target kill 300 3.5.12 4.5.12 100 100 100 Toxic fumes 255 3.5.13 4.5.13 90 90 75 Fragmentation 20 3.5.14 4.5.14 20 Fouling 1,100 3.5.15 4.5.15 300 300 500 Accuracy match 90 3.5.16 4.5.16 Accuracy barrel Maximum range 180 3.5.17 4.5.17 60 60 60 Propellant stability - 3.6.1 4.6.1 Waterproofness 50 3.6.2 4.6.2 Sequential rough handling 9,840 3.6.3 4.6.3 200 400 12 Meter drop 13,120 3.6.4 4.6.4 Long term high temp storage 220 3.6.5 4.6.5 100 120 Long term low temp storage 220 3.6.6 4.6.6 100 120 Humidity 600 3.6.7 4.6.7 300 300 Cook-off 3550 3.6.8 4.6.8 900 900 1750 Attitude 1,760 3.6.9 4.6.9 480 480 800 Barrel erosion 30,000 3.6.10 4.6.10 30000

(CUI) TABLE IV. Design verification tests and inspection – Continued

Inspection Method

Notes 1/

Weapon Used M4 M16 M249

ESD 25 3.6.11 4.6.11 25

Salt fog 300 3.6.12 4.6.12 150 150 Chemical compatibility 70 3.6.13 4.6.13 70 Safety analysis - 3.7.1 4.7.1 Final hazard classification - 3.7.2 4.7.2 Energetic material qualification - 3.7.3 4.7.3

DELETED

Demilitarization - 3.7.5 4.7.5 Workmanship - 3.7.7 4.7.7 Packaging - 5.1 / 5.2 4.7.8 Notes:

1/ If no accept/reject criteria is expressed, the sample shall be rejected if any of the cartridges fail to comply with the applicable requirement.

2/ Objective evidence shall be provided for requirement in order to prove feasibility of production (see 6.11.2).

3/ These tests shall be done simultaneously.

4/ The total sample amount shall be evenly divided between each temperature that is used for this test.

5/ The quantity for reliability verification shall be taken from all ballistic tested cartridges.

6/ With approval, ballistic tests can be combined and conducted simultaneously to minimize resources and time.

7/ Refer to TABLE IX for testing breakout. Refer to TABLE VIII for accept/reject criteria.

8/ Defects at all temperatures shall be combined. The first half of the rounds that are fired from the M249(1) at each temperature, during Function and Casualty, shall be verified for bullet integrity. Conformance Criteria shall be: Accept on 83 / Reject on 84 projectile breakups.

4.2. (CUI) First article inspection. When specified, a sample of the cartridges shall be subjected to first article verification in accordance with TABLES III, V, VII, and VIII, and applicable paragraphs within this section.

4.2.1. (CUI) First article rejection. If any assembly, component, or test specimen fails to comply with any of the applicable requirements, the first article shall be rejected.

(CUI) TABLE V. First article tests and inspection

Inspection Method

Notes 1/ Weapons Used

Examination of characteristics M4 M16 M249

Critical 100% & Level VII 3.1.1, 3.1.2 TABLE VII 2/

Major (101-105) 100% & Level V 3.1.1, 3.1.2 TABLE VII 2/

Major Level V 3.1.1, 3.1.2 TABLE VII 2/ Minor Level III 3.1.1, 3.1.2 TABLE VII 2/ Product uniformity - 3.1.1 4.1.1 Cartridge - 3.4.1 4.4.1 Weapon compatibility - 3.4.2 4.4.2 Head stamp Level III 3.4.3.1 4.4.3.1 2/ Exterior color Level V 3.4.3.2 4.4.3.2 2/ Primed case sensitivity 50 3.5.1 4.5.1 Velocity 120 3.5.2 4.5.2 3/,4/ EPVAT barrel Chamber pressure 120 3.5.3 4.5.3 3/,4/ EPVAT barrel Action time 120 3.5.4 4.5.4 3/,4/ EPVAT barrel Bullet extraction 100 3.5.5 4.5.5 Residual stress 100 3.5.6 4.5.6 Dispersion 300 3.5.7 4.5.7 Accuracy barrel Functional reliability - 3.5.9 4.5.9 5/ Function and casualty 3,000 3.5.10 4.5.10 6/,7/ 1000 1000 1000 Bullet integrity 1,000 3.5.11 4.5.11 6/,8/ 1000 Target kill 100 3.5.12 4.5.12 100 Fouling 300 3.5.15 4.5.15 300 Accuracy match 90 3.5.16 4.5.16 Accuracy barrel Maximum range 20 3.5.17 4.5.17 9/ Waterproofness 50 3.6.2 4.6.2 Lot numbering - 3.7.6 4.7.6 10/ Workmanship Level III 3.7.7 4.7.7 2/ Packaging - 5.1 / 5.2 4.7.8

(CUI) TABLE V. First article tests and inspection - Continued

Notes:

1/ If no accept/reject criteria is expressed, the sample shall be rejected if any of the cartridges fail to comply with the applicable requirement.

2/ Level III, Level V, or Level VII refers to Verification Level III, V, or VII respectively of

TABLE II Attributes Sampling Plans in MIL-STD-1916.

3/ These tests shall be done simultaneously.

4/ The total sample amount shall be evenly divided between each temperature that is used for this test.

5/ The quantity for reliability verification shall be taken from all ballistic tested cartridges.

6/ With approval, ballistic tests can be combined and conducted simultaneously to minimize resources and time.

7/ Refer to TABLE IX for testing breakout. Refer to TABLE VIII for accept/reject criteria.

8/ Defects at all temperatures shall be combined. All rounds that are fired from the M249, during

Function and Casualty, shall be verified for bullet integrity. Conformance Criteria shall be:

Accept on 38 / Reject on 39 projectile breakups.

9/ Only the weapon which produced the maximum range during design verification shall be used.

10/ Lot numbering shall be verified before cartridge lot acceptance, and during pack-out process.

4.3. (CUI) Conformance verification (Lot Acceptance Tests). When specified, a sample of cartridges and components shall undergo conformance inspection by examination, analysis, demonstration and tests as specified in accordance with TABLE III, VI, VII, and VIII, and applicable paragraphs within this section. For conformance inspections the same sample specimen may be used for all non-destructive examinations or tests.

4.3.1. (CUI) Lot formation. The cartridges shall be assembled into identifiable homogeneous lots. Each lot shall consist of the same type of cartridges, manufactured under essentially the same conditions. Unless otherwise specified, component parts shall be homogeneous, inspected, and tested. Production lot formation shall conform to requirements of MIL-STD-1168 and inspection sample shall conform to the requirements of MIL-STD-1916.

The cartridge lot shall contain:

a. All component parts shall be from one manufacturer.

b. Primers from one lot interfix number.

c. Propellant from no more than two lot numbers.

d. Projectiles from one unchanged process.

e. Only one type and weight of propellant and primer shall be used in a lot.

4.3.2. (CUI) Inspection of cartridges by classification of defects. Inspection of cartridges shall be performed for known character defects as specified in TABLE VII as well as any design specific defects that are not listed in TABLE VII. Inspection sampling requirements for critical, major, and minor characteristics are defined in MIL-STD-1916.

4.3.3. (CUI) Conformance inspection rejection. If any item of the sample fails to comply with the conformance inspection test verification, the lot shall be rejected.

(CUI) TABLE VI. Conformance tests and inspection

Inspection Method

Notes 1/ Weapons used

Examination of Defects M4 M16 M249

Critical 100% & Level VII 3.1.1, 3.1.2 TABLE VII 2/

Major (101-105) 100% & Level IV 3.1.1, 3.1.2 TABLE VII 2/

Major Level IV 3.1.1, 3.1.2 TABLE VII 2/ Minor Level II 3.1.1, 3.1.2 TABLE VII 2/ Product uniformity - 3.1.1 4.1.1 Cartridge - 3.4.1 4.4.1 Weapon compatibility - 3.4.2 4.4.2 Head stamp Level II 3.4.3.1 4.4.3.1 2/ Exterior color Level IV 3.4.3.2 4.4.3.2 2/ Primed case sensitivity 25 3.5.1 4.5.1 Velocity 60 3.5.2 4.5.2 3/,4/ EPVAT barrel Chamber pressure 60 3.5.3 4.5.3 3/,4/ EPVAT barrel Action time 60 3.5.4 4.5.4 3/,4/ EPVAT barrel Bullet extraction 50 3.5.5 4.5.5 5/ Residual stress 50 3.5.6 4.5.6 6/ Dispersion 90 3.5.7 4.5.7 Accuracy barrel Functional reliability - 3.5.9 4.5.9 7/ Function and casualty 1,200 3.5.10 4.5.10 8/,9/ 400 400 400 Bullet integrity 400 3.5.11 4.5.11 8/,10/ 400 Waterproofness 50 3.6.2 4.6.2 11/ Lot numbering - 3.7.6 4.7.6 12/ Workmanship Level II 3.7.7 4.7.7 2/ Packaging - 5.1 / 5.2 4.7.8 Notes:

1/ If no accept/reject criteria is expressed, the sample shall be rejected if any of the cartridges fail to comply with the applicable requirement.

2/ Level II, Level IV, or Level VII refers to Verification Level II, IV, or VII respectively of

TABLE II Attributes Sampling Plans in MIL-STD-1916.

(CUI) TABLE VI. Conformance tests and inspection - Continued

Notes – continued:

3/ These tests shall be done simultaneously. Failure to comply with the applicable requirement shall be cause for testing of a second sample consisting of double the quantity used in the first test. Failure of the cartridges in the second sample to comply with the applicable requirement shall be cause for rejection of the lot. If that failed requirement was performed at a particular temperature the double sample shall be performed at that temperature only.

4/ The total sample amount shall be evenly divided between each temperature that is used for this test.

5/ If the average extraction force fails in the first test, then a second sample consisting of double the number of cartridges in the first sample shall be tested. The lot shall be rejected if the second sample fails.

6/ Failure of two or more cartridges to comply with the applicable requirement shall be cause for rejection of the lot. If one cartridge fails in the first test, a second sample consisting of double the number of cartridges in the first sample shall be tested. If any failing cartridges are found in the second sample, the lot shall be rejected.

7/ The quantity for reliability verification shall be taken from all ballistic tested cartridges.

8/ With approval, ballistic tests can be combined and conducted simultaneously to minimize resources and time.

9/ Refer to TABLE IX for testing breakout. Refer to TABLE VIII for accept/reject criteria.

10/ Defects at all temperatures shall be combined. All rounds that are fired from the M249, during

Function and Casualty, shall be verified for bullet integrity.

Conformance Criteria shall be: If more than 8 but less than 38 cartridges fail in the first test, a second sample consisting of double the number of cartridges in the first sample shall be tested for bullet integrity. The lot shall be rejected if in the combined first and second sample (1200 total cartridges), 38 or more cartridges fail to comply with the requirement.

11/ Failure to comply with the applicable requirement shall be cause for testing of a second sample consisting of double the quantity used in the first test. Failure of the cartridges in the second sample to comply with the applicable requirement shall be cause for rejection of the lot.

If that failed requirement was performed at a particular temperature the double sample shall be performed at that temperature.

12/ Lot numbering shall be verified before cartridge lot acceptance, and during pack-out process.

(CUI) TABLE VII: Defect inspection by classification of characteristics

Classification Examination or Test 1/ 2/ Component Part

Inspection Method

Critical 1 Case split in K, L, or M location (6) Cartridge Visual/Gage

2 Case split in I, S, or J location (6) when loss of powder occurs Cartridge Visual/Gage

3 Perforated case (7) Cartridge Visual/Gage 4 Propellant weight under minimum 3/ Cartridge Gage 5 Incorrect cartridge 4/ Cartridge Visual/Gage

Major 101 Primer missing (32) Primer Visual/Gage 102 Primer cocked (33) Primer Visual/Gage 103 Primer inverted (34) Primer Visual/Gage 104 Case split in I, S, or J location (6) with no loss of powder Cartridge Visual/Gage

105 Incorrect cartridge 4/ Cartridge Visual/Gage 106 Depth of primer, incorrect Primer Visual/Gage 107 Total length Cartridge Gage 108 Length to shoulder datum Cartridge Gage 109 Cartridge profile Cartridge Gage 110 Beveled underside of head (10) Cartridge Gage 111 No chamfer on head (rim) (13) Cartridge Gage 112 Diameter of extractor groove, maximum, incorrect Cartridge Gage

113 Diameter of head, incorrect Cartridge Gage 114 Thickness of rim, incorrect Cartridge Gage 115 Corroded or stained (if etched) case (2) Case Gage 116 Round head (case) (4) Case Visual/Gage 117 Damaged projectile Projectile Visual 118 Loose primer (35) Primer Visual/Gage 119 Draw scratch (8) Case Visual 120 Loose bullet (25) Cartridge Visual 121 Scaly metal (12) Case Visual 122 Dent (5) Case Visual

(CUI) TABLE VII. Defect inspection by classification of characteristics - Continued

Classification Examination or Test 1/ 2/ Component Inspection Method

123 Fold, wrinkle, buckle, or bulge (14, 15, 16, 17)

Case Visual

124 Scratch (9) Case Visual 125 Defective head (19) Case Visual 126 Defective mouth (20) Case Visual

Minor

201 Discolored, dirty, oily, or smeared (waterproofing)

Cartridge Visual

202 Dented case (5) Cartridge Visual/Gage

203 No waterproofing material (primer pocket joint) (37)

Cartridge Visual/Gage

204 Draw scratch in case (8) Case Visual/Gage 205 Scratch in case (9) Case Visual/Gage 206 Scaly metal on case (12) Case Visual

207 Fold, wrinkle, buckle, or bulge in case (14, 15, 16, 17) Case Visual

208 Diameter of extractor groove, minimum Case Gage 209 Defective head (19) Case Visual 210 Defective crimp (primer) (38) Primer Visual/Gage 211 Nicked or dented primer (36) Primer Visual/Gage 212 Workmanship - Visual 213 Illegible or missing head stamp (18) Case Visual 214 Defective mouth (20) Case Visual

215 Missing or partially missing identification (see

MIL-STD-636)

Projectile Visual

Notes:

1/ Numbers in parenthesis after defect descriptions refer to visual standards in MIL-STD-636.

For case split locations see 7643674.

(CUI) TABLE VII. Defect inspection by classification of characteristics - Continued

Notes - Continued:

2/ Any defects not specified in TABLE VII that are inherent to the submitted design shall be recognized and classified for future examination during the product baseline and key characteristic establishment phase. In addition, any defects listed above that are not applicable to the submitted design shall be removed from inspections.

3/ The minimum charge required to preclude the possibility of a bullet in bore shall be established. Cartridges containing less than this minimum charge are critically defective.

4/ Inspection for incorrect cartridge type shall be performed during or immediately prior to the packaging operation, which is before cartridge lot acceptance. Occurrence of any type other than blank, dummy, inert or a training round shall be classified as a critical defect.

Occurrence of a blank, dummy or inert shall be classified as a major defect. If a defect is found at 100% inspection, which is during or immediately prior to the packaging operation inspection, the incorrect cartridge type shall be replaced with a correct cartridge type. For verification level inspection, a VL VII sample shall be selected at random from the lot.

From this VL VII sample, a VL IV sample shall be selected at random. A VL IV sample shall be inspected for major and critical incorrect cartridge type defects. The cartridges that remain of the initial VL VII sample after the VL IV sample is selected shall be inspected for critical incorrect cartridge type defects only. If a critical defect is found during VL VII inspection, the lot shall be withheld from acceptance and government approved procedures for product disposition shall be followed. If a major defect is found during VL IV inspection, the incorrect cartridge type shall be replaced with a correct cartridge type and the entire lot shall be subjected to a subsequent 100% inspection.

During the subsequent inspection, any incorrect cartridge type found shall be replaced with a correct cartridge type.

(CUI) TABLE VIII. Firing defect criteria

Defect Description 1/ 6/ Acc Rej Classification Bullet in bore 0 1 Critical Weapon stoppage attributable to ammo 1/ Major

Misfires:

Misfire - Propellant weight under minimum 0 1 Critical

Misfire - No vent hole 0 1 Major

Misfire - Obstruction in vent hole 0 1 Major

Misfire – other 1/ 2/ Major Primer defects:

a. Perforation in the primer cup not caused by the firing pin 3/ Major

b. Blown primer (Primer separates from case head and primer pocket is grossly distorted) 3/ Major

c. Dropped primer (Primer that falls out of pocket on retraction of the bolt) 3/ Major

d. Perforation of firing pin indent in primer cup 3/ Major

e. Escape of gas around the primer cup 3/ Major

Case casualties: 5/

a. Longitudinal split

(1) Through case base (M) 0 1 Critical

(2) Case base (L) 0 1 Critical

(3) Body (K) extending to case base 4/ Major

(4) Upper body (J) 4/ Major

(5) Neck and shoulder (I or S) 4/ Minor

b. Circumferential rupture

(1) Complete 0 1 Critical

(2) Partial – case base (L) 0 1 Critical

(3) Partial – body (K) 4/ Major

(4) Partial – neck, shoulder, or upper body (I, S or J) 4/ Major

Notes:

1/ a. For design verification, if the firing defects listed above plus firing defects observed in all other tests is greater than the acceptance amount of defects to meet the reliability requirement in 3.5.9, the qualification sample shall be rejected. During testing all stoppages shall be defined and observed. Primer and case casualty defects that do not affect the reliability functioning of the weapon will be considered separately.

(CUI) TABLE VIII. Firing defect criteria – Continued

Notes - continued:

Accept / Reject Criteria

Test Accept Reject Cumulative Reject

DVT 259 260 N/A

FAT 16 17 N/A

LAT 3 7 13

b. The occurrence of one or more critical defects attributable to the cartridge during any test, including warm and foul firings of cartridges from the test lot, shall result in rejection of the lot.

2/ Each cartridge that misfires shall be disassembled and examined for cause.

3/ For primer defects, the defect rate of all the major defects combined shall be not greater than 15 per 1000 rounds and all the minor defects combined shall be not greater than 40 per 1000 rounds.

4/ For case casualties, the defect rate of all the major defects combined shall be not greater than 15 per 1000 rounds and all the minor defects combined shall be not greater than 40 per 1000 rounds.

5/ For location of defects indicated in parenthesis, see drawing 7643674.

6/ a. For first article and lot acceptance a firing defect table shall be established including the defects above in addition to any new defects that have been witnessed during design verification or which are inherent to a particular design. Using statistical analysis, this firing table shall be developed with accept/reject criteria that is based on results during design verification and shall meet the reliability requirement in 3.5.9 (see 6.12).

b. A cumulative sample shall be established for lot acceptance that shall allow for double sample retesting. For lot acceptance testing, if the number of defects found in the first test is greater than the acceptance number, a second sample, consisting of double the quantity specified for the function and casualty test, shall be fired. If the total number of defects in the combined first and second samples is greater than the acceptance number for the cumulative sample, the lot shall be rejected. If, in testing a second sample, defects other than those for which the second sample is being tested should occur to the extent that the acceptance number for the cumulative sample is exceeded, the lot shall be rejected. Cumulative sampling shall not be applicable for critical defects.

4.4. (CUI) Interface and interoperability verification

4.4.1. (CUI) Cartridge. The cartridge dimensions shall be verified by standard measurement equipment or specialty gauges.

4.4.2. (CUI) Weapon compatibility. Weapon interface and compatibility of the round shall be verified by successful completion of tests in TABLES IV, V, and VI. Observations shall be made during operating and environmental verification testing of the cartridge to ensure loading, chambering, firing, and extraction of the spent cartridges from the designated weapons, without incident.

4.4.3. (CUI) Cartridge identification.

4.4.3.1. (CUI) Head stamp. The stamp on the surface of the cartridge shall be verified by visual inspection.

4.4.3.2. (CUI) Exterior color. The exterior color shall be verified by visual inspection using the required SAE-AMS-STD-595 color chip for the shade designated during design verification.

4.5. (CUI) Operational verification. With approval, ballistic tests can be combined and conducted simultaneously to minimize resources and time. All ballistic testing shall be examined against TABLE VIII with the exception of environmental requirement tests in 3.6. For any ballistic test except function and casualty, where the occurrence of a firing defect prevents the obtaining of a valid result for the characteristic being tested, the defect shall be observed, but the particular test for which the round was fired shall not be penalized. A replacement round shall be fired to obtain the data for the test.

Unless otherwise specified the following definitions describe the temperature conditions for this specification.

Extreme Cold: -40°F ± 4°F (-40°C ± 2°C) Cold: - 4°F ± 4°F (-20°C ± 2°C) Ambient: 70°F ± 4°F (21°C ± 2°C) Hot: 104°F ± 4°F (40°C ± 2°C) Extreme Hot: 125°F ± 4°F (52°C ± 2°C)

The ammunition will be conditioned at the respective temperatures for not less than 4 hours (not less than 2 hours for ambient). The conditioned ammunition, other than ambient, will not be exposed to ambient temperature conditions for greater than 5 minutes. If so, the ammunition will be reconditioned for not less than 4 hours.

4.5.1. (CUI) Primed case sensitivity. Primers shall be tested in accordance with

DTL13038145, Appendix J, Primer Sensitivity Test Procedure.

4.5.2. (CUI) Velocity. The results during design verification at ambient shall be used to establish the design velocity. For all testing, the cartridges shall be conditioned and fired at hot, cold, and ambient temperatures (see 4.5). The cartridges shall be fired single shot. Tests shall be conducted in accordance with DTL13038145, Appendix A, Electronic Pressure, Velocity and Action Time (EPVAT) Test Procedure.

4.5.3. (CUI) Chamber pressure. The test samples shall be conditioned and fired at hot, cold, and ambient temperatures (see 4.5). The cartridges shall be fired single shot. Tests shall be

4.5.4. (CUI) Action time. The test samples shall be conditioned and fired at hot, cold, and ambient temperatures (see 4.5). The cartridges shall be fired single shot. Tests shall be

4.5.5. (CUI) Bullet extraction. The cartridge shall be tested in a bullet extraction machine in accordance with DTL13038145, Appendix E, Bullet Extraction Test Procedure. The rate of travel of the test machine head shall be from 3 to 6 inches (75 mm to 150 mm) per minute.

4.5.6. (CUI) Residual stress.

4.5.6.1. (CUI) Cartridges with brass cases. Test in accordance with DTL13038145, Appendix Q, Residual Stress (Mercurous Nitrate) Test Procedure. Prior to testing, all lubricants and coatings shall be removed from the cartridge case using solvents or cleaning techniques appropriate to the particular lubricant or coating being used.

4.5.6.2. (CUI) Cartridges with cases of other materials. Test in accordance with approved procedures, appropriate for the materials(s) used to manufacture the cartridge (see 6.2).

4.5.7. (CUI) Dispersion. The test samples shall be conditioned and fired at ambient temperature (see 4.5) one round at a time from an accuracy barrel in accordance with DTL13038145, Appendix C, Accuracy (Dispersion) Test Procedure. Targets shall be measured and results recorded in terms of the average mean radius by using the following method: The distance from the center of each shot hole on the target to the horizontal reference axis shall be measured. The distances shall be added together and divided by the number of shots, resulting in the average vertical distance. The distance from the center of each shot hole on the target to the vertical reference axis shall be measured. The distances shall be added together and divided by the number of shots, resulting in the average horizontal distance. The center of impact is located at the coordinates of the average horizontal distance and average vertical distance from the origin. The mean radius is calculated by measuring the distance from the center of impact to the center of each shot hole of the target; these distances are then added and divided by the number of shot holes.

4.5.8. (CUI) Cartridge noise level. TOP 1-2-608 Sound Level Measurements shall be used as a general guide to conduct this test. Four microphones shall be positioned around the weapon and placed at a height of 5.2 ft (1.6 m) at the following locations:

a. Approximately at the shooter’s ear position.

b. 5 m to the rear of the muzzle (180° referenced from the LOF).

c. 5 m to the left of the muzzle (270° referenced from the LOF).

d. 5 m to the left rear of the muzzle (225° referenced from the LOF).

Three single shots shall be fired with each of the following weapons: M4 Carbine, M16A4 Rifle, and M249 SAW setup for a total of 9 rounds.

4.5.9. (CUI) Functional reliability. The cartridge reliability shall be verified with results from all ballistic testing performed with the exception of environmental requirement tests in 3.6 (see 6.12).

4.5.10. (CUI) Function and casualty. Test shall be performed in accordance with

DTL13038145, Appendix B, Function and Casualty Test Procedure and Appendix N, Barrel Erosion Test Procedure, Annex A, 5.56mm Barrel Erosion Test Procedure. During design verification testing, both ammunition and weapons shall be conditioned at cold, ambient, and hot (see 4.5). The firing amounts shall be in accordance with TABLE IX below.

TABLE IX. Function and Casualty Testing

Test Total

Rounds Amount of rounds in each weapon at specified temperature

Cold Ambient Hot DVT 49,200 1,200 rds – M4 (1)

1,200 rds – M4 (2) 1,200 rds – M4 (3) 1,200 rds – M16A4 (1) 1,200 rds – M16A4 (2) 1,200 rds – M16A4 (3) 2,000 rds – M249…