AR-15 variants AR series models AR series 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AR6320 | AR-15 Lightweight | 4th Generation | S-1 | A1 | Yes | Yes | 16 in. | A1 | 1:9 | Short Ribbed | Yes | A2 |
| AR6450 | AR-15 9mm Carbine | 4th Generation | S-1 | A1 | No | Removable | 16 in. | A1 | 1:10 | Short Ribbed | Yes | A1 |
| AR6520 | AR-15A2 Government Carbine | 4th Generation | S-1 | A2 | Yes | Yes | 16 in. | A1 | 1:7 | Short Ribbed | Yes | A2 |
| AR6520SP | AR-15A2 Government Carbine | 4th Generation | S-1 | A2 | Yes | Yes | 10 in. | A2 | 1:7 | Short Ribbed | Yes | A2 |
| AR6525 | AR-15A2 Government Carbine | 4th Generation | S-1 | A2 | Yes | Yes | 16 in. | A2 | 1:9 | Short Ribbed | Yes | A2 |