Manual

3-18. CLEANING, INSPECTION
3-19. BEFORE FIRING. The rifle
2-14.
3-20. AFTER FIRING.
AND REPAIR.
should be inspected as indicated in Section 3, Chapter II,
a. Cleaning after Firing: Table 3-2 and 3-3.
b. Inspection after Firing: Table 3-4.
3-21. REPLACEMENT OF PARTS.
3-22. All replacement parts are interchangeable and require no adjustments when being in-
stalled in this rifle. However, to insure proper function and full reliability, the following pre-
cautions should be taken :
a. Do not interchange bolts, bolt carrier; and barrels. Keep the bolt carrier assembly
v:ith its original barrel to assure retention of cxrect headspace.
b. If replacement of either part becomes necessary, carefully check the new part to see
that it fits properly and operates smoothly.
3-23. FUNCTION CHECK.
NOTE
Remove Magazine
3-24. A complete function check of the rifle consists of checking the operation of the rifle while
the selector lever is in the SAFE, SEMI, and AUTO positions. The following sequence is used
for a rapid, complete check. Any portion of the check may be used alone to determine the oper-
ational condition of any specific fire selection. Start with the upper and lower receiver groups
in the open position.
NOTE
Receiver is in open position
a. SAFE position. Cock hammer and pull trigger. Hammer should not fall.
b. SEMI position. Pull trigger. The hammer should fall. Hold trigger to rear, recock
hammer and release trigger. Hammer should transfer from disconnect to the hammer and sear
engagement.
NOTE
Receiver is in closed position
c. AUTO position. Pull trigger, hammer should fall. Hold trigger to the rear and operate
charging handle, recocking the hammer. Release charging handle. The hammer should fall. Re-
lease trigger and operate charging handle, cocking hammer. Release charging handle. Ham-
mer should not fall. For further safety check, while cocked with safety on, rap butt on floor.
If hammer falls, turn in for repair.
d. SEMI position. Pull the charging handle to the rear. Inspect the chamber for safety
and release charging handle. Pull the trigger. Hammer should fall.
3-7