| Part Description & Links | Colt Part | Bushmaster Part |
|---|---|---|
| (1) Magazine (30 rnd) | 62328 | 8448670 |
| (2) Sling | N/A | N/A |
| (3) Bolt Carrier Group | 62287 (M16) | 8448501-S (AR15) |
| (4) Charging Handle | 62290 | 8448517 |
| (5) Upper Receiver Group | 64501 (M16) | N/A |
| (6) Lower Receiver Group | 64550 (M16) | N/A |