1、MIL-R-45777 LO W 7777706 0307777 6 -1 9-37-8 3 MIL-R-45979 24 September 1976 (See Section 6) A I M I L I TARY SPEC I F I CAT I O td RIFLE, 7.62MM: M14, NATIONAL MATCH This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specifi
2、cation covers one type of 7.62 millimeter (mm) , 1 ightwei ght, air-cooled, gas-operated, semiautomatic, magazine-fed, glass-bedded, military-type rifle designed to provide a refined rifle for markmanship purposes and for use in national rifle match competitive shooting. 2. APPLICABLE DOCUMENTS 2.1
3、Issues of documents. The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein: SPEC I FI CAT IONS Mil i tary MI L - I - 6868 MIL-W-13855 MIL-P-14232 MIL-1-45607 MIL-C-45662 MIL-C-46477 MIL
4、-C-46934 STANDARDS Federal Fed. Std. No. 356 Inspection Process Magnetic Particl e Weapons; Small Arms and Aircraft Arma- ment Subsystems: General Specification for Parts, Equipment and Tools for Army Materiel ; Packaging and Packing of Inspection Equipment; Acquisition, Maintenance and Disposition
5、of Calibration System Requirements Cartridge, 7.62m, NATO, Test, High- Pressure, M60 Cartridge, 7.62mm, NATO, Match, M118 Comercial Packaging of Suppl ies and Equipment FSC 1005 THIS DOCUMENTCONTAINS 23 PAGES. - Licensed by Information Handling ServicesMIL-R-45777 LO = 7797706 0307780 2 MIL-R-45979
6、Mil i tary MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes MIL-STD-1 O9 - Qual i ty Assurance Terms and Definitions DRAWINGS Rock Island Arsenal 57790476 - Rifle, 7.62mm, M14 N.M. (Product drawings referenced in this specification form a part of Drawing 57790476. ) PUBLICAT
7、IONS Rock Island Arsenal P 77904 7 6 - Packaging Data Sheet for Rifle, QE-G-DL7790476 - Qual i ty Engineering Data List 7.62mn, M14 N.M. w/Equipment U.S. Government SF-32 - General Provisions (Copies of specifications, standards, drawings, and pub1 ications required by contractors in connection with
8、 specific procurement functions should be obtained from the procuring activity or as directed by the contracting off i Cer. ) this specification to the extent specified herein. indicated, the issue in effect on date of invitation for bids or request for proposals shall apply. 2.2 Other publications.
9、 The following documents form a part of Unless otherwise American National Standards Insti tute (ANSI) ANSI B46.1 - Surface Texture (Application for copies should be addressed to the American National Standards Institute, 1430 Broadway, New York, New York 10018.) 3. REQUIREMENTS 3.1 First article. R
10、equirements for submission of first article shall be as specified in the contract (see 6.1). Unless otherwise speci- fied (see 6.1), the first article shall include the pilot pack (see 5.1). 2 1 i : I i t I 1 ! I Licensed by Information Handling ServicesMIL-R-45979 3.2 Materials, construction and de
11、sign. Rifles shall conform to the materials, construction and design requirements specified herein, on Drawing 57790476 and in MIL-W-13855. 3.2,1 Barrel and receiver assembly, The barrel shall be assembled and aligned to the receiver in the position specified on Drawing F7791363. 3.2.1.1 Barrel. The
12、 barrel shall be so fabricated that when the rifle is completely assembled, the requirements for targeting and accuracy hereinafter prescribed shall be met. The barrel shall be free of cracks and seams and the bore and chamber shall be free of foreign matter, corrosion, burrs, pits, bulges and defor
13、mations. sharp edges shall be removed from chamber edges. occurring in a chamber which otherwise meets the surface roughness requirements shall be permitted provided they do not cawse marks on the . case of a high-pressure test cartridge fired in the chamber. shall be proof and magnetic particle ins
14、pection marked in accordance with Drawl ng F7791362 , 3.2.1.2 Cartridge clip guide. The cartridge clip guide shall be fastened securely to the receiver by the spring pin so that there is no relative movement. The cartridge clip guide shall position and retain the clip to allow recharging of the maga
15、zine without removing the magazine from the rifle. Burrs and Scratches or marks The barrel 3.2.1.3 Connector locking pin. The connector locking pin shall be retained in the receiver by the flared retaining pin and shall move through its full range of travel without binding (see Drawing F7791363). 3,
16、2.1.4 Selector shaft lock, selector shaft, and sear release, The selector shaft lock, selector shaft and sear release shall be assembled and welded to the receiver in accordance with the applicable drawing, After assembly and welding, these parts shall be permanently fused to the receiver making the
17、m an integral part of the receiver and rendering the rifle incapable of automatic fire. Welded areas shall be touched up with touch-up materials in accordance with the applicable drawing and MIL-W-13855. 3.2,2 Bedding of receiver and trigger housing. The receiver and the trisser housing shall bear o
18、n the stock and stock liner contact surfacei-and shall-grip the stock securely so that there is no relative movement. pletely seated so that there is no overhang of the stock. The periphery of the rear end of the receiver shall be com- I Licensed by Information Handling Servicesc- - . - , e- flIL-R-
19、LI5777 LO m 97797Ob 0307782 b m Il MI L-R-45979 3.2.3 Bolt assembly and operating rod action. With the firing mechanism, stock and operating rod spring disassembled from the rifle, the bolt assembly, with the operating rod connected, shall move of its own weight in either direction through its full
20、range of travel in the receiver when the axis of the rifle is manually changed from the hori- zontal to approximately 60 degrees elevation and depression. 3.2.4 Bolt Assembly. The bolt assembly, with the operating rod disconnected, shall move through its full range of travel in the receiver without
21、binding and when in the fully locked (forward) position, the bottom surface of the right hand locking lug shall seat on the receiver. Firing pin protrusion shall be .O44 inch minimum to .O60 inch maximum in the forward position. 3.2.4.1 Bolt and roller assembl-y. The bolt roller shall be re- tained
22、on the bolt b.y the retaining ring and shall rotate without binding on the bolt shaft. The bolt and rller-assembly shall be proof and magnetic particle inspection marked in accordance with Drawing 57790476. 3.2.4.2 Ejector. The ejector shall be retained in the bolt by the extractor shank and shall b
23、e held in the forward position by the ejector spring. The ejector shall move through its full range of travel under spring action without binding in the bolt and shall eject cartridge cases completely out of the rifle when the rifle is function fired or manually operated. When tp rifle is function f
24、ired, the ejection pattern shall be from 15 to 90 (12:30 to 3:OO oclock) to the right of the longitu- dinal axis of the rifle. 3.2.4.3 Extractor. The extractor shall be retained in the bolt by the extractor spring and plunger assembly. through its full range of travel under spring action without bin
25、ding, and shall extract cartridge cases from the barrel when the rifle is function fi red or manual ly operated. The extractor shall move 3.2.4.4 Firing pin. The firing pin shall be retained in the bolt by the extractor shank and shall move of its own weight through its full range of travel in the b
26、olt. 3.2.5 Bolt stop. The bolt stop shall be retained on the receiver by the spring pin and shall be held in the “down“ position by action of the bolt stop spring. The bolt stop shall move through its full range of travel , and when positioned manually or by action of the magazine follower, it shall
27、 hold the bolt in the open (rearward) position. The bolt stop shall disengage from the bolt by action of the bolt stop spring when the magazine follower is disengaged, and the operating rod is retracted. 4 I Licensed by Information Handling Services-_ MIL-R-45777 LO m 7777706 0307783 I MIL-R-45979 3
28、.2.6 Connector assembly. The connector assembly shall be retained on the receiver by the connector locking pins and spring action of the connector plunger. The connector assembly shall prevent the operating rod handie from popping out of the receiver way. 3.2.7 Flash suppressor. The flash suppressor
29、 shall be aligned as specified on the applicable drawing and shall be fastened securely to the barrel by the flash suppressor nut whSch in turn shall be fastened securely by a set screw. flash suppressor, the flash suppressor nut or the set screw. 3.2.8 Firing mechanism. The firing mechanism shall a
30、ssemble to the rifle without the use of tools, and shall disassemble from the rifle when the trigger guard is unlatched from the trigger housing using a tool simulating a cartridge, 3.2.8.1 Hammer. The hammer shall pivot on the hamer pin through its full range of travel without binding, and when the
31、 hammer is released from the cocked position it shall pivot forward to the stop position on the trigger housing under spring action. position to the other, and shall remain in the position set until reset manually. The safety shall block the trigger and lock the hammer in a position out of contact w
32、ith the trigger when the hamer is cocked and the safety is moved to the “Safe“ (rearward) position. When the safety is moved to the “Fire“ (forward) position, the hammer shall release when the trigger is pulled. is retracted, the sear shall engage and hold the hammer until the trigger is released an
33、d allowed to move forward. There shall be no relative movement of the 3.2.8.2 Safety. The safety shall be movable manually from one 3.2.8.3 Sear. When he trigger is retained rearward, and the hamer 3.2.8.4 Trigger The trigger hooks shall hold the hammer in the cocked position until the trigger is pu
34、lled, and after partial or com- pleted trigger pull the trigger shall return to its normal forward posi- tion under spring action. 3.2.8.5 Trigger guard. The trigger guard shall latch to and un- latch from thehousing, and when unlatched apd rotated shail be capable of.cocking the hammer. The latches
35、 shall securely retain the firing mechanism to the rifle. 3.2.9 Gas cylinder group. The gas cylinder shall be retained on the barrel by the gas cylinder lock and plug. There shall be no rota- tional or longitudinal movement of these parts. The gas piston shall 5 Licensed by Information Handling Serv
36、ices1 MIL-R-q5777 20 9779706 0309784 T i- MI L-R-45979 move of its own weight through its full range of travel in the gas cylinder with the rifle axis vertical. The gas cylinder plug shall be assembled with the torque specified on Drawing 37790476. The gas cut- off valve shall rotate from one positi
37、on to the other only when manually pressed inward and rotated, and when indexed and released shall return to the outward position by spring action. 3.2.10 Handguard assembly. The handguard assembly shall be retained on the barrel by the rear handguard band and the front band. 3.2.11 Magazine assembl
38、y and magazine latch. The magazine follower shall function through its full range of travel under spring action with- out binding. When the last cartridge from the magazine has been fired, the follower shall position the bolt stop to hold the bolt open. The magazine shall assemble to the rifle witho
39、ut manual depression of the magazine latch and shall be retained in the magazine-well of the receiver by the magazine latch and the operating rod spring guide. When the magazine latch is pressed forward, it shall permit manual removal of the magazine from the rifle. 3.2.12 Operating rod. The operati
40、ng rod shall function through its full range of travel wi thout bi ndi ng operating rod shall not contact the stock in the area where the handle passes through the opening between the stock and the barrel, and shall not have contact with the front corner of the receiver throughout the full range of
41、travel of the operating rod. When in the full retracted position, the operating rod shall bear lightly against the underside of the enlarged section of the barrel. When manual ly operated , the 3.2.12.1 Operating rod, two piece design. The operating rod tube shall be securely welded to the handle in
42、 accordance with Drawing D7267064. 3.2.13 Operating rod guide. The operating rod guide shall be retained on the barrel by the spring pin, and there shall be no relative movement of the operating rod guide. 3.2.14 Operating rod spring and spring guide. With the magazine assembled to the receiver, the
43、 operating rod spring shall seat on the operating rod spring guide, and shall not seat on the receiver. 3.2.15 Sights. 3.2.15.1 Front sight. The front sight shall be capable of lateral There shall be no relative movement adjustment on the tenon of the flash suppressor, and shall be fastened securely
44、 by the front sight screw. of these parts, 6 Licensed by Information Handling ServicesMIL-R-45979 10 9999906 0309785 1 MIL-R-45979 3.2.15.2 Rear sight assembly. The windage knob and the elevating knob shall function without binding through their full range of travel. and shall produce positive reten
45、tion perceptible by touch for each detnt notch when the sight is adjusted manually. The aperture shall function in the base without binding, and the rear sight cover shall bear on the aperture when the elevation knob is rotated manually. The aperture, when raised to the 600-meter position shall not
46、have any perceptible looseness when pressure is applied in a horizontal plane along the windage axis. When the aperture is in a vertical plane away from the rifle, the spring tension of the cover shall return the aperture to its original position. The eyepiece shall rotate manually on the aperture 3
47、60 degrees without binding, and shall produce positive retention per- ceptible by touch for each 180 degrees of rotation. shall fit in the base without perceptible backlash. The windage knob 3.2.16 -Stock assembly. 3.2.16.1 Plate assembly with shoulder rest. The plate assembly with shoulder rest sha
48、ll be fastened securely to the stock by the butt screws with no overhanging metal. The butt plate cap shall be retained in the open position by the action of the butt plate plunger and spring, and shall be retained in the closed and locked position by the plunger operated catch. The shoulder rest pl
49、ate shall be retained in the open or closed position by the action of the ball and the lock spring. stock shall have access through the butt plate to the accessory holes. The holes shall accept the go-gage depicted on Drawing B7271641. Each 3.2.16.2 Stocks. The grain in the wood stocks shaTl be straight, and in the longitudinal direction of the component. the wood shall be treated to blend with the remainder of the component to produce a uniform color. except that filling of small pin holes not exceeding 0.06 inch in dia- meter will be allowed in the receiver well are
