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|  MIL-P-71012A(AR)
4.6.3.2 Repair parts. Each barrel, slide and other pistol
component subjected to direct pressure during pistol firing (as
identified by a Government representative) shall be tested for
high-pressure resistance requirement by being subjected to the
firing of one M905 high-pressure test cartridge. A slave pistol
or pistol-simulating test fixture may be used for this test.
Proof firing shall be accomplished in a contractor test fixture
having a protective shield (or it may be remotely fired), After
proof firing, the parts shall be magnetic particle inspected
(MPI) per MIL-STD-1949 or dye penetrant inspected (DPI) per MIL-
STD-6866, as applicable, for evidence of firing-induced defects or
failures. In addition, the parts shall be visually examined for
evidence of damage, and the cartridge cases shall be visually
examined for bulges, splits, rings, and other defects caused by
defective barrels. Proof marks and inspection marks shall be
applied on parts that have passed this test.
4.6.4
Function testing.
4.6.4.1 Function firing test (M882). The pistol shall be
tested for functioning requirement by firing-a fully loaded
magazine of M882 ammunition. Function firing shall be
accomplished with the pistol hand-held or heid in a contractor
designed fixture simulating hand-held firing. The magazine used
shall be one to be shipped with the pistol. The first four round
shall be fired slowly (each shot being deliberately spaced at
approximately 2 second intervals) and the remaining rounds shall
be fired in rapid succession. Two of the first four rounds shall
be fired after the hammer/striker has been returned to the
uncocked position using the decocking mechanism. All other rounds
shall be fired in the cocked position.
4.6.4.2 First article test. After completing the testing
specified in 4.6.4.1, the first article test pistols shall be
function tested using commercially available controlled expansion
ammunition. Each pistol shall be tested by firing one fully loaded
magazine of subsonic controlled expansion ammunition (Federal
Cartridge jacketed hollow point 147 grain Hydra-shok or
equivalent) and one fully loaded magazine of supersonic controlled
expansion ammunition (Olin/Winchester jacketed hollow point 115
grain Silvertip or equivalent) following the procedure specified
in 4.6.4.1. Ammunition not provided by the Government shall be
obtained from a commercial manufacturer approved by the
Government.
4.6.5 Accuracy and dispersion test. Each pistol shall be
tested for accuracy and dispersion requirements (see 3.4.5).
Accuracy and dispersion firing shall be accomplished with the
pistol hand-held or held in a contractor-designed, government
approved fixture which simulates hand-held conditions. If a
fixture (e.g. a Ransom Rest) is used, each pistol may be fired
with not more than 8 rounds of contractor furnished ammunition to
settle the pistol in the fixture and to allow optimization of the
rear sight position. During this time, the pistol may be
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