Parts Diagrams
Rear Sight
| Part Description | Colt Part | Bushmaster Part |
|---|---|---|
| Rear Sight Assembly (Complete) | 64521 | 9349072 |
| (1) Rear Sight Windage Screw | 64525 | 9349076 |
| (2) Rear Sight Base | 64523 | 9349074 |
| (3) Rear Sight Windage Knob Pin | 64522 | MS1656-103 |
| (4) Rear Sight Windage Knob | 64526 | 9349077 |
| (5) Rear Sight Index Spring | 64518 | 9349069 |
| (6) Rear Sight Ball Bearing | 64517 | MS19060-4808 |
| (7) Rear Sight Flat Spring | 61708 | 8448536 |
| (8) Rear Sight Aperture | 64524 | 9349075 |
| (9) Rear Sight Ball Bearing | 64517 | MS19060-4808 |
| (10) Rear Sight Helical Spring | 64518 | 9349069 |
| (11) Index Screw | 64514 | 9349065 |
| (12) Rear Sight Elevation Index | 64515 | 9349066 |
| (13) Elevation Knob | 64516 | 9349067 |
| (14) Rear Sight Elevation Spring | 64519 | 9349070 |
| (15) Elevation Index Spring | 64518 | 9349069 |
| (16) Ball Bearing | 64517 | MS19060-4808 |
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