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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 734A | M16A2 Commando | 3rd Generation | S-1-3 | A1 or A2 | Yes | Yes or No | 11.5 in. | A1 or A2 | 1:7 | Short Ribbed | No | A1 or A2 |
| 735 | M16A2 Commando / M4 Commando | 3rd or 4th Generation | S-1-3 | A1 or A2 | Yes | Yes or No | 11.5 in. | A1 or A2 | 1:7 | Short Ribbed | No | A1 or A2 |
| 737 | M16A2 | A2 | S-1-3 | A2 | Yes | Yes | 20 in. | HBAR | 1:7 | Ribbed | Yes | A2 |
| 738 | M4 Commando Enhanced | 4th Generation | S-1-3-F | A2 | Yes | Yes | 11.5 in. | A2 | 1:7 | Short Ribbed | No | A1 or A2 |
| 741 | M16A2 | A2 | S-1-F | A2 | Yes | Yes | 20 in. | HBAR | 1:7 | Ribbed | Yes | A2 |
| 742 | M16A2 (Standard w/ bipod) | A2 | S-1-F | A2 | Yes | Yes | 20 in. | HBAR | 1:7 | Ribbed | Yes | A2 |