Technical data

TM 9-1005-319-23&P 0019
0019-5
ALL WEAPONS
2 4
2 5
2 3
1 7
1 v s 1 5 5
Figure 5. Removal of Forward Assist Assembly.
11. Remove spring pin (23) using 3/32 in. drive pin punch and hand hammer.
WARNING
To avoid injury to eyes, use care when removing spring-loaded parts.
12. Remove forward assist assembly (24) and helical spring (25) from upper receiver (17). For further
disassembly of forward assist assembly see WP 0020.
END OF TASK
REPAIR OR REPLACEMENT
M16A2 RIFLE ONLY
1. Check rear sight parts for serviceability. Inside of apertures should be round and distinct. Replace if
defective.
2. Visually inspect rear sight assembly helical springs and ball bearings for breaks, bends, and missing
parts. Ball bearings should be smooth and round. Replace if defective.
3. Check upper receiver for cracks, corrosion, and damage. Clear drain hole with a piece of wire. Repair
(WP 0015) or replace if defective.
4. Check that flat spring retains sight aperture firmly in either position. Replace flat spring if sight
aperture is not firm.
5. Check elevation index and windage knob for legibility of markings. Check underside of windage knob
for cracks. Detent indexing surfaces should be well formed.
6. Check rear sight base for serviceability. Clear drain holes for springs. Threaded portion of rear sight
base and elevation knob should be well formed.