Technical data

TM 9-1005-319-23&P 0019
0019-11
9. Install flat spring (12) and sight aperture (9) in rear sight base (11). Install windage screw (10) with
screwdriver.
10. Insert helical spring (5) and ball bearing (6) in windage knob (8).
NOTE
Tilt upper receiver toward windage knob during positioning to prevent loss of ball
bearing.
11. Position windage knob (8) on shaft of windage screw (10). Align holes in windage knob with hole of
shaft in windage screw. Install spring pin (5).
ALL WEAPONS
4
3
2
1
1 7
1 v s 1 6 2
Figure 12. Installation of Ejection Port Cover.
12. Position ejection port cover (3) and helical spring (2) on upper receiver (17) with short leg of helical
spring to the rear on inside of ejection port cover.
NOTE
Long leg of helical spring must be positioned and pretensioned before the headless
grooved pin is installed.
13. Hold short leg of helical spring (2) in this position and turn long leg one half turn (180 degrees) with
fingers of right hand.
14. Position long leg of helical spring (2) against ejection port cover (3). Hold helical spring and ejection
port cover in this position and install headless grooved pin (4). Check for proper spring tension during
installation of retaining ring (1).
END OF TASK