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|  MIL-M-45945A
Groups of nonmating parts for interchangeability
TABLE III.
(Continued)
Pin, shoulder, headed (11699779)
Group IX
(used with bushing 11699778)
Pin, straight, headed (11699757)
(used with trigger assembly 11699758)
Pin, straight, headless (7792920)
(used with bolt plug assembly 7791523)
Piston, gas (7791247)
Plug retaining (11010377)
(used with lock, barrel 11010184)
Gas cylinder plug assembly (9362515)
Connector, link, sear, rod (11699789)
Group X
Frame assembly, cartridge feed (7792097)
Sleeve, dust seal (11699787)
Spring, helical, compression (11699756)
(used with trigger assembly 11699759)
Spring, helical torsion (7269301)
(used with pin 7269247)
Washer, lock (7269035)
Yoke, buffer retaining (11699786)
4.5.7.1.2 Concurrent repair parts. Concurrent repair parts
shall be tested for interchangeability requirement (see
4.4.3.4.1.2 or 3.4.7) by disassembling two machine guns,
previously tested in 4.4.3.4.1.1, as necessary, and then
reassembling them using the concurrent repair parts. No hand
refinement of parts will be allowed, and the machine guns shall
operate and function properly. This test may be performed inde-
pendently of machine gun interchangeability test specified in
4.4.3.4.1.1 and at more frequent intervals using accepted machine
guns taken from current production.
4.5.7.2 Interplant. Machine guns to be subjected to the
interplant interchangeability test shall be given preliminary
hand functioning to assure proper operating before parts are
disassembled from the machine gun. Machine guns shall be
interchanged in a manner similar to the detail plan in 4.5.7.1.1
except that parts shall be divided into six groups and, that when
disassembling every other machine gun shall be one produced by a
different manufacturer. The machine guns shall be tested for and
comply with the requirements for headspace, firing pin indent,
trigger pull, functioning, and targeting and accuracy before and
37
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