AR-15 variants Numbered Colt military models Numbered Colt military models

| Colt_model_no_ | Name_ | Stock | Fire_control | Rear_sight | Forward_assist | Case_deflector | Barrel_length | Barrel_profile | Barrel_twist | Hand_guards | Bayonet_Lug | Muzzle_device |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 607 | CAR-15 SMG | 1st Generation | S-1-F | A1 | No | No | 10 in. | A1 | 1:12 | Short Triangular | No | Type 1 and 2 Duckbill and 3.5 Moderator |
| 607A | CAR-15 SMG | 1st Generation | S-1-F | A1 | Yes | No | 10 in. | A1 | 1:12 | Short Triangular | No | Type 1 and 2 Duckbill and 3.5 Moderator |
| 607B | CAR-15 SMG | 1st Generation | S-F-1-3 | A1 | No | No | 10 in. | A1 | 1:12 | Short Triangular | No | Type 1 and 2 Duckbill and 3.5 Moderator |
| 608 | CAR-15 Survival Rifle | Tubular | S-1-F | A1 | No | No | 10 in. | A1 | 1:12 | Short Round | No | Conical or 3.5 Moderator |
| 609 | XM177E1 | 2nd Generation | S-1-F | A1 | Yes | No | 10 in. | A1 | 1:12 | Short Ribbed | No | 3.5 or 4.5 Moderator |