4-1. General a. Rifles must meet the limits of serviceability as indicated by the repair standards in table 3-14.
b. Rifles that have been repaired should be function-fired, whenever possible, to assure proper operation.
(1) On rifles NOT equipped with a selector, ten rounds will be fired.
(2) On riflea equipped with a selector, a full magazine of 20 rounds will be fired (five rounds fired semiautomatically and 15 rounds fired automatically in bursts of approximately five rounds).
Warning: Under no c ire instances should the blank cartridge be altered by inclusion of additional propellant powder in an attempt to obtain automatic action without the blank firing attachment. Additional propellant powder will not increase gas port pressure enough to operate the rifle automatically but may in» crease chamber pressure enough to cause extensive rifle damage and possible injury to the operator.
c. After firing, visually check all assemblies of the weapon with emphasis on the bore of the flash suppressor for evidence of gilding metal from bullet. Refer to table 3-9 for flash suppressor alignment, if gilding metal shows within flash suppressor.
4-2. Visual Inspection a. Overall appearance will be approximately that of a new weapon. All exposed metal surfaces must be free of rust, and have a dull, rust resistant finish with no burs or deep scratches. Barrels must be straight, clean, free from rust, powder fouling, and free of bulges and rings. Fine pitting is allowable. Rifles must be complete with no missing parts. All modifications must be applied. The serial numbers must be legible.
b. Refer to paragraph 2-7.
Upon completion of inspection, and the rifle has been restored to a completely serviceable condition, it shall be certified that the weapon is acceptable for "return to user" or for "return to stock".
Refer to TM 9-1005-228-20.
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