A07_RWP_ATTACHMENT_7_MILSTD1913_specs.pdf

F==l I 1

MIL-STD-1913 (AR)

3 FEBRUARY 1995

MILITARY STANDARD

DIMENSIONING OF ACCESSORY

MOUNTING RAIL FOR

SMALL ARMS WEAPONS

AMSC N/A FSC 1005

DISTRIBUTION STATEMENT A. Approved forpublicrelease;dlstrlbutlcmIsunllmited.

I

MIL-STD-1913 (AR)

FOREWORD

1. This military standard is approved for use by all Departments and Agencies of the Department of Defense.

2. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, U.S. Army Armament Research, Development and Engineering Center, Attn: SMCAR-QAF-S, Picatinny Arsenal, NJ 07806-5000, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.

MIL–STD-1913 (AR)

CONTENTS

I

PARAGRAPH

1.

1.1

2.

2.1 2.1.1 2.2 2.3

3.

3.1 3.2 3.3 3.4 3.5 3.6

4.

4.1 4.1.1 4.1.2

5.

5.1 5.2 5.3

6.

6.1 6.2 6.3 6.4

Figure

SCOPE

Scope

APPLICABLE DOCUMENTS

Government documents Specifications, standards and handbooks ...

Non-Government publications Order of precedence

DEFINITIONS

Accessory Accessory mounting rail Dovetail Recoil groove Profile Small arms

GENERAL REQUIREMENTS

Dimensioning and Tolerancing Edge break Fiilet radii

DETAILED REQUIIVMENTS

Accessory mounting rail profile Recoil groove Length of accessory mounting rai:

NOTES

Intended use

Issue of DODISS Application Subject term (key word) listing

LIST OF FIGURES

Accessory mounting rail profile Recoil groove

CONCLUDING MATERIAL

ii

PAGE

3“

MIL-STD-1913 (AR)

1. SCOPE

1.1 Scope. This document establishes standard methods of

dimensioning accessory mounting rails for small arms weapon systems. It also establishes uniform accessory mounting rails and requirements that are interchangeable among the different units of the Defense Department. Adherence to this standard is mandatory in the preparation of drawings, specifications or technical data packages for the accessory mounting rail used for small arms weapons.

2. APPLICABLE DOCUMENTS

2.1 Government documents.

2.1.1 edifications~. 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 listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2)

SPECIFICATIONS

MILITARY

MIL-w-13855 .-Weapons, Small Arms and Aircraft Armament Subsystems, General Specification for

(Unless otherwise indicated, copies of federal and military specifications, standards and handbooks are available from the DODSSP - Customer Service, Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.)

2.2 Non-Government publications. The following documents

form a part of this military standard to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2).

AMERICAN NATIONAL STANDARDS INSTITUTE

ANSI Y14.5M - Dimensioning and Tolerancing

(Application for copies should be addressed to the American National Standards Institute, 1430 Broadway, New York, NY 10018)

MIL-STD–1913 (AR)

2.3 Order of precedence. 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. DEFINITIONS

3.1 Accessorv. In this document, accessory refers to items

which can be attached to the accessory mounting rails such as laser pointers, fire control devices, night vision devices, grenade launchers, optics, thermal weapon sights etc.

3.2 Accessory mountinq rail. A grooved dovetail feature

that serves as a mounting platform used to mount accessories.

3.3 Dovetail. The wedge shaped cross-section of the

accessory mounting rail.

3.4 Recoil qroove. Recoil groove is a groove on the

accessory mounting rail that prevents forward and aft movement of an accessory.

3.5 Profile. In this document, profile refers to the cross

sectional outline as depicted in Figure 1 which establishes a dimensional tolerance zone extending the length, width and depth of the considered feature.

3.6 Small arms, Small arms as used in this document is

defined as man-portable individual and crew-served weapon systems used against protected and unprotected personnel and lightlunarmored vehicles. Included among these weapon systems are ballistic and non-ballistic systems and associated munitions, aiming, powering, storage and other ancillary items.

4. GENERAL REQUIREMENTS

4.1 Dimensioning and tolerancinq. Dimensioning and

tolerancing of the accessory mounting rail for small arms shall be in accordance with MIL-w-13855, ANSI Y14.5M (using inch-pound units in lieu of metric.) and Figures 1 and 2,.

4.1.1 Edqe break. Edge break on the accessory mounting rail

shall be .002 inch + .010 inch.

4.1.2 Fillet radii. Fillet radii on the accessory mounting

rail shall be .020 inch + .015 inch.

MIL-STD-1913 (AR)

5. DETAILED REQUIREMENTS

5.1 Accessorv mounting rail Profile. Standard dimensioning

and tolerancing for the profile of the accessory mounting rail for small arms weapons shall be as shown in Figure 1.

5.2 Recoil qroove. The standard dimensions of the recoil

groove of the accessory mounting rail for small arms weapons shall be as shown in Figure 2.

5.3 Lenqth of accessorv mountina rail. The length of the

accessory mounting rail is dependent upon the particular application of Small arms weapon it is to be mounted on.

6. NOTES

(This section contains information of a general or explanatory nature which may be helpful, but is not mandatory. ) i

6.1 Intended use. This standard contains requirements for

the dimensioning and tolerancing of Accessory Mounting Rails for Small Arms Weapons.

6.2 Issue of DODISS. When this standard is used in

acquisition, the issue .of the DODISS must be cited in the solicitation (see 2.1.1 and 2.2) .

6.3 Application. The location of the mounting rail and its

features are dependent upon the particular application. Careful consideration should be given to the following:

a. Available areas to place the mounting rail on a small arm.

b. The length of the mounting rail.

The number of grooves on the mounting rail.

:: The relationship of the mounting rail location to that which is required by the accessory.

e. The effect on the arms user (i.e., eye relief, safe eye distance, etc.)

~ 6.4 Subiect term (kev word) listinq.

Accessory Machine Gun Carbine Dovetail Modular Weapon Rifle t44Modular Weapon Mounting Rail Small arms M16 Modular Weapon Rail Small arms weapons

I MIL-STD-1913 (AR)

0 x w m

0. .

V

-3’ w

CN I

Q

V)ln

-z o

CL

a)~

EL

“i5 o c o.- (J7 c

-cl

CN

MIL-STD–1913 (AR)

CONCLUDING MATERIAL

Custodian:

ARMY-AR

Preparing activity:

ARMY-AR

(Project 1005-0825) u term Iwo, ub I w rremuus tout wv are omdcfe. ,,8290