Technical data

TM 9-1005-319-23&P 0019
0019-9
1 5
1 6
1 1
1 7
2 8
1 v s 1 5 9
Figure 9. Installation of Rear Sight Base.
6. Insert threaded portion of rear sight base (11) into upper receiver (17) and rotate elevation knob
assembly (28) until threads engage.
7. Insert helical spring (15) and ball bearing (16) into hole as elevation knob assembly (28) is further
rotated and rear sight base (11) is lowered into upper receiver (17). Rotate elevation knob assembly
until rear sight base is all the way down. Then come up 22 clicks before installing spring pin. Check
spring action of helical spring on upper receiver.