| 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 |
| r6000 | ar - 15 sporter (sp1) | a1 | s - 1 | a1 | no | no | 20 in | a1 | 1:12 | triangular | yes | type 2 duckbill or a1 |
| r6001 | ar - 15 sporter carbine (sp1 carbine) | 2nd generation | s - 1 | a1 | no | no | 16 in | a1 | 1:12 | short ribbed | yes | a1 |
| r6002 | ar - 15 sporter (sp1 , bundled with 3x scope) | a1 | s - 1 | a1 | no | no | 20 in | a1 | 1:12 | triangular | yes | a1 |
| r6420 | ar - 15a2 sporter ii carbine | 3rd generation | s - 1 | a1 | yes | no & yes | 16 in | a1 | 1:7 | short ribbed | yes | a2 |
| r6430 | sporter lightweight (9 mm) | a2 | s - 1 | a1 | no | removable | 16 in | a1 | 1:10 | short ribbed | yes | a1 |
| r6450 | ar - 15 9 mm carbine | 3rd generation | s - 1 | a1 | no | no & removable | 16 in | a1 | 1:10 | short ribbed | yes | a1 |
| r6500 | ar - 15a2 sporter ii | a2 | s - 1 | a1 | yes | no & yes | 20 in | a2 | 1:7 | ribbed | yes | a2 |
| r6520 | ar - 15a2 government carbine | 3rd generation | s - 1 | a2 | yes | yes | 16 in | a1 | 1:7 | short ribbed | yes | a2 |
| r6530 | sporter lightweight 223 | 3rd generation | s - 1 | a2 | yes | yes | 16 in | a1 | 1:7 | short ribbed | no | a2 |
| r6550 | ar - 15a2 government | a2 | s - 1 | a2 | yes | yes | 20 in | a2 | 1:7 | ribbed | yes | a2 |
| r6550cc | ar - 15a2 government (w / factory camouflage finish) | a2 | s - 1 | a2 | yes | yes | 20 in | a2 | 1:7 | ribbed | yes | a2 |
| r6551 | sporter target | a2 | s - 1 | a2 | yes | yes | 20 in | a2 | 1:7 | ribbed | no | a2 |
| r6600 | ar - 15a2 hbar | a2 | s - 1 | a2 | yes | yes | 20 in | hbar | 1:7 | ribbed | yes | a2 |
| r6601 | sporter match hbar | a2 | s - 1 | a2 | yes | yes | 20 in | hbar | 1:7 | ribbed | no | a2 |
| r6700 | sporter competition hbar | a2 | s - 1 | flattop | yes | yes | 20 in | hbar | 1:9 | ribbed | no | a2 |
| r6721 | ar - 15a3 tactical carbine | 4th generation | s - 1 | a2 | yes | yes | 16 in | hbar | 1:9 | short ribbed | yes | a2 |
| r6724 | sporter competition hbar | a2 | s - 1 | flattop | yes | yes | 24 in | hbar | 1:9 | ribbed | no | a2 |
| r6731 | ar - 15a3 competition hbar | a2 | s - 1 | a2 | yes | yes | 16 in | hbar | 1:9 | short ribbed | no | a2 |
| r6750 | sporter competition hbar (bundled w / bipod) | a2 | s - 1 | a2 | yes | yes | 20 in | super - heavy | 1:7 | ribbed | no | a2 |
| r6821 | sporter carbine (7.62x39 mm) | 3rd generation | s - 1 | a2 | yes | yes | 16 in | hbar | 1:12 | short ribbed | no | a1 |