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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 605 | CAR-15 Carbine | A1 | S-1-F | A1 | No | No | 15 in. | A1 | 1:12 | Triangular | No | Type 2 Duckbill |
| 605A | CAR-15 Carbine | A1 | S-1-F | A1 | Yes | No | 15 in. | A1 | 1:12 | Triangular | No | Type 2 Duckbill |
| 605B | CAR-15 Carbine | A1 | S-F-1-3 | A1 | No | No | 15 in. | A1 | 1:12 | Triangular | No | Type 2 Duckbill |
| 606 | CAR-15 Heavy Assault Rifle M1 | A1 | S-1-F | A1 | No | No | 20 in. | HBAR | 1:12 | Triangular | Yes | Type 2 Duckbill |
| 606A | CAR-15 Heavy Assault Rifle M1 | A1 | S-1-F | A1 | Yes | No | 20 in. | HBAR | 1:12 | Triangular | Yes | Type 2 Duckbill |
| 606B | CAR-15 Heavy Assault Rifle M1 | A1 | S-F-1-3 | A1 | Yes | No | 20 in. | HBAR | 1:12 | Triangular | Yes | Type 2 Duckbill |