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| ![]() MIL-G-45140B
3. REQUIREMENTS
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3.1 First article. Requirements for submission of first article
shall be as specified in the contract (see 6.1). Unless otherwise
specified, the first article shall include the pilot pack (see 5.1).
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3.2 Materials, construction and design. The gun shall conform to
the materiels, construction and design requirements specified herein,
on Drawing F7268115 and MIL-W-13855.
3.2.1 Barrel. The barrel shall be free of cracks, seams and
mutilations. The bore and chamber shall be free of foreign matter,
corrosion, pits, burrs, sharp edges, bulges and deformations. Scratches
or marks, occurring in a chamber which otherwise meets the surface
roughness requirements , shall be permitted provided they do not cause
marks on the case of a high-pressure test cartridge fired in the chamber
(see 3.3.2). The barrels shall be proof and magnetic particle inspection
marked in accordance with the applicable drawings.
3.2.2 Barrel and receiver assembly. The barrel shall be drawn up
securely in the receiver, and the barrel and receiver draw lines shall
coincide.
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3.2.3 Bolt and slide. The bolt and slide shall traverse the
receiver assembly through their full range of travel without binding and
shall lock and unlock in the receiver without binding. The bolt assem-
bly (bolt, extractor, plunger spring, extractor plunger and spring pin)
shall be proof and magnetic particle inspection marked in accordance
with the applicable drawings. The slide keys shall be securely brazed to
the slide if keys are used. The slide key shall have the radii as
specified on the applicable drawings.
3.2.4 Bolt gui des. The bolt guides shall assemble readily to the
slide, shall be retained in the slide by the springs and shall engage in
the bolt guide slots.
3.2.5 Bolt lock. The bolt lock shall be securely attached to the
receiver and the bolt lock screws shall be staked to prevent loosening.
The bolt lock shall be capable of locking the bolt in the firing
position.
3.2.6 Buffer assembly. The buffer bushings shall be securely brazed
to the buffer body and the buffer disc shall be securely riveted to the
buffer bushing assembly. The buffer assembly shall readily assemble to,
and disassemble from, the rear of the receiver and shall perform its
function to absorb recoil.
3.2.7 Buffer catch. The buffer catch shall operate without
binding through its full range of travel and when engaged in the buffer
assembly under spring action shall prevent rotational movement of the
buffer assembly.
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