SOW for 6.5 Creedmoor Gas Operated Rifle.docx

STATEMENT OF WORK (SOW)

6.5 Creedmoor Gas Operated Rifle

2.0 REQUIREMENTS

2.1 General. The USSS has a requirement for a 6.5 Creedmoor rifle, equipped with semi-automatic firing capability, for use in all environmental conditions. The weapon shall be commercially available and exhibit a ‘manual of operation’ consistent with the existing/legacy M110 SASS family of weapons. Physical Characteristics.

2.2.1 The weapon shall be operable, without modification or alteration, by a right or left-handed user, firing with the right or left hand, depending on handedness, (Fully ambidextrous).

2.2.2 All external metal parts of the weapon shall have a dark subdued, rust/corrosion resistant finish. The finish shall be unaffected by commercially available gun cleaning solvents, such as Simple Green, used in heated ultrasonic cleaning tanks. Flaking, peeling, blotching, etc. of the finish is unacceptable.

2.2.3 The weapon shall be chambered in accordance with current SAAMI Specifications in 6.5 Creedmoor, and function with assorted ammunition ranging in weight from 130-145 grain (to include all common SAAMI-spec and Mil-Spec ammunition).

2.2.4 Dimensional Requirements:

2.2.4.1 Height (no taller than, w/o accessories or magazine) …………………..…..7.75 inches

2.2.4.2 Weight including suppressor (no heavier than, w/o accessories) ...............9.5 pounds.

(the folding stock sample will not be weighed).

2.2.4.3 O/A Length (no longer than, w/stock fully collapsed) …………….………40 inches.

2.2.4.4 Barrel length (min – max) ………………….….………………...… 15.5-16.5 inches.

2.2.5 Operating System. The weapon shall utilize a direct-impingement gas-operated system or a short-stroke gas piston system.

2.2.6 Barrel.

2.2.6.1 The barrel shall have a minimum service life of 3,500 rounds, (weapon systems will be tested to 5000 rounds).

2.2.6.2 Barrel service life is defined as not exceeding 1.5 Minutes-of-Angle and exhibiting no more than 150 ft/sec decrease in velocity (in accordance with USSS velocity testing procedures), with observance of offeror’s submitted maintenance protocols.

2.2.6.3 The barrel shall be free of cracks, seams, and other injurious defects and the bore and chamber shall be free of pockets, rings, bulges, and other deformations. If coated the chamber and bore shall be free of nodules, flaking, pits, stripping, anode burrs and evidence of etched base steel. Burrs and sharp edges shall be removed from the chamber edges, and bolt locking lugs.

2.2.6.4 The muzzle should be equipped with the appropriate attachment device for mating with the included sound suppressor. If a muzzle device is utilized it should be installed with shims as necessary. Crush washers are not acceptable.

2.2.7 Suppressor.

2.2.7.1 The Rifle shall be supplied with a suppressor, both Quick detachable or direct thread is acceptable.

2.2.8 Mode of Fire. The weapon shall be semi-automatic.

2.2.9 Fire Selector.

2.2.9.1 The fire control selector shall be ambidextrous in design and be a single lever paddle mounted on the side of the receiver, adjacent to the rear pistol grip, thereby not requiring the shooter to significantly break their firing grip when actuating.

2.2.9.2 The fire control selector shall be a rotary type and shall have two positions; safe and semi-automatic and shall rotate manually without binding from one position to another when the hammer is cocked. The selector shall remain in place in each position by a perceptible spring detent load until manually reset.

2.2.9.2.1 With the hammer cocked, when the selector is placed in the "SAFE" position, it shall prevent the trigger from releasing the hammer so that the weapon is incapable of being fired.

2.2.9.2.2 When the selector is placed in the "SEMI AUTOMATIC" position, it shall have a disconnect, so that the weapon is capable of semi-automatic fire only (one shot with each pull of the trigger).

2.2.10 Trigger. The trigger shall be of two stage design and weight shall be 3.5 lbs. min and 5.0 lbs. max.

2.2.10.1 The trigger shall hold the hammer in the cocked position until the trigger is pulled. After partial or complete trigger pull, the trigger shall return to its normal forward positions (cocked and uncocked) under spring action.

2.2.10.2 The trigger configuration shall be two-stage with no adjustment screws or set screws.

2.2.10.3 The trigger shall have a smooth face, cannot be wider than the trigger guard, and shall be the only control inside the area enclosed by the trigger guard. Any other controls (bolt catch/release, magazine/catch release, etc.) inside the area enclosed by the trigger guard are not acceptable.

2.2.10.4 While utilizing gloves, the trigger shall not pinch the trigger finger between the trigger and the side of the receiver or between the trigger and the inside bottom of the trigger guard (see Note 1). Any manipulation/modification to the trigger guard to meet this requirement is not acceptable.

2.2.11 Charging Handle. The charging handle shall be situated in the upper receiver. The charging handle shall not reciprocate with the bolt when the weapon is fired. The charging handle shall be capable of being operated with one hand while the shooters other hand is grasping the pistol grip or forend grip. The charging handle should be ambidextrous with a latch release system.

2.2.12 Bolt Hold-Open Device. The rifle shall be equipped with a magazine activated bolt hold open device. The bolt hold open device shall also be capable of being activated manually by the operator. When the bolt hold open device is activated by the magazine follower and the magazine is subsequently removed, the bolt shall remain in the rear or open position. When the bolt is in the rear or open position and a full magazine is inserted, the bolt shall remain in the rear or open position until the operator manually activates the bolt release. When the bolt catch is released, the bolt shall return to the battery position. Upon release, the bolt shall strip a round from the loaded magazine and load it into the chamber.

2.2.13 Magazine.

2.2.13.1 The magazine release shall securely retain the magazine in the magazine well. The magazine (whether empty or full) shall fall free from the magazine well once the magazine release button is activated without any further operator assistance. The magazine release button shall be spring loaded and the design of the receiver shall provide some shielding against inadvertent activation when placed against standard USSS uniform and/or body armor. The activation of the magazine release button shall be accomplished with minimum effort by the operator with only one hand.

2.2.13.2 The magazine should reliably feed all types of ammunition utilized in the USSS Evaluation and Testing protocols.

2.2.13.3 The magazine shall be capable of being inserted directly into the magazine well by the operator with one hand, and without any "rocking" type motion.

2.2.14 Upper Receiver. The weapon shall be equipped with a Mil-Std-1913 Picatinny attachment rail on the top of the receiver for mounting of optics, iron sights, lasers, etc. (see Note 3)

2.2.15 Forend/Handguard. The weapon shall have a modular free-floating handguard assembly measuring no less than 11 inches and no more than 16 inches of functional/configurable rail space (measured along the 6:00 o’clock position of the rail) (see note 3).

2.2.15.1 The handguard assembly shall have the ability to attach Mil-Std-1913 Picatinny rail segment along the length of the handguard at the 3:00, 6:00 and 9:00 o'clock positions simultaneously. The manufacturer shall provide 2 each, 5 slot, 7 slots and 9 slot rail segments. An ARCA rail system, either integral or add-on is required.

2.2.15.2 When assembled to the weapon, the upper most rail of the free-floating handguard assembly shall align and be at the same height as the rail on the receiver. A one-piece receiver/handguard assembly is acceptable as long as the barrel is free-floating, the above rail positioning interfaces are present, and handguard portion meets the minimum and maximum length requirement detailed in Section 2.20.15.

2.2.16 Pistol Grip. The rear pistol grip shall be securely attached to the lower portion of the receiver and shall not interfere with the operation of the selector lever. If applicable to the submission, vendor shall provide interchangeable rear pistol grip adapters (backstraps).

2.2.17 Butt-Stock. The butt stock shall be quickly adjustable for length of pull and cheek weld without the use of any tools. The butt stock shall have, at minimum total of six positions, including fully extended and fully collapsed.

Note: End-User testing will evaluate stocks based on mission compatibility/adaptability requirements, including overall adjustability, compactness, comfort, etc.

2.2.18 Sling Mount. The weapon shall be supplied with means to mount a sling to, at minimum, the rear area of the receiver and the handguard, via quick-detach sling swivel. All sling mounting/attachment points will be required to be rotation-limited (4-position) quick-detach cups, to allow interface with quick-detach push button swivels.

NOTE 1: The glove utilized for testing will be the Outdoor Research “Ironsight Sensor Glove”.

NOTE 2: All reliability and endurance tests will be conducted utilizing magazines supplied by the offeror at time of solicitation.

NOTE 3: Total length combined between the upper receiver and handguard must be at least 19 inches of Mil-Std-1913 Picatinny rail at the 12 o’clock position. Measurement will begin at forward edge rear most slot and be measured to the forward edge of the foremost slot.