Technical data

TM 9-1005-319-23&P 0015
0015-26
TEST AND INSPECTION - Continued
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Figure 36. Use of Weights in Headspace Check.
9. If the test fails using finger pressure, remove the gage and perform the test again as follows. With the
muzzle down, stack 8 1/2 to 8 3/4 pounds of trigger weights (36) on a locally fabricated spacer/weight
(37) on key and bolt carrier assembly (34). Insert headspace gage (35) and test per above instructions.
10. Remove trigger weights (36), spacer/weight (37), key and bolt carrier assembly (34), charging handle
(32), and headspace gage (35).
11. If excessive headspace, first replace bolt assembly and then recheck. If headspace is not corrected,
replace barrel assembly; then recheck with the original bolt to determine if the bolt is still good or if the
bolt should be replaced also.
12. Remove key and bolt carrier assembly, bolt assembly, charging handle assembly, and headspace gage.
13. Reassemble weapon; refer to TM 9-1005-319-10.
NOTE
Weapons which have been re-barreled must be function-fired with seven rounds of
5.56mm ball ammunition. After re-barreling, the weapon must be targeted with
three rounds of 5.56mm ball ammunition at 25 meter range using target. Refer to
TM 9-1005-319-10 and FM 3-22.9.
END OF TASK
END OF WORK PACKAGE