TM 9-2350-230-12
TABLE 3-7. CHECKING AND ADJUSTING HEADSPACE-CAL. .50 MACHINE GUN - CONTINUED
STEP
PROCEDURE
FIG/ITEM
HEADSPACE TOO LOOSE
If NO GO end of gage enters T-slot, perform following procedures:
15
Retract bolt, step 2 above.
16
Screw barrel into barrel extension one notch (click). Return parts to
battery position.
17
Retract recoiling parts, step 7 above.
18
Check headspace, step 10 above.
NOTE. If proper headspace adjustment cannot be obtained, notify
organizational maintenance personnel.
Figure 3-11. Checking and adjusting headspace on cal. .50 machine gun, M2, HB
3-19