Technical data

TM 9-1005-319-23&P 0019
0019-10
ASSEMBLY - Continued
2 9
1 7
2 8
1 1
1 8
1 9
1 v s 1 6 0
1 8
Figure 10. Installation of Helical Spring.
CAUTION
Ensure that spring pin passes over helical spring, not through its coils.
8. Insert helical spring (18) through underside of upper receiver (17). Compress helical spring with a
small tip screwdriver (29) to install spring pin (19). Spring pin must pass over helical spring, not
through its coils. Rotate elevation knob assembly (28) until rear sight base (11) is all the way down.
1 v s 1 6 1
9
1 2
1 1
5
8
1 0
7
6
Figure 11. Installation of Sight Aperture and Windage Knob.