"Isn't the rifling twist different between the CAR and the M-4?"
Paging Professor Squantos....
Click here for definitions of the terms used in this table.
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| R6000 | AR-15 Sporter (SP1) |
.223 | 20 | Standard | 1:12" | 7.5 | No | Yes | No | A1 | A1 | Straight | 3-prong | 13 | Straight | Smooth triangular | Safe, semiautomatic | --- | 1964 | 1985 | |
| R6001 | AR-15 Sporter w/collapsible stock (SP1 Carbine) |
.223 | 16 | Standard | 1:12" | 5.8 | No | Yes | No | A1 | A1 | Straight | Birdcage | --- | Straight | Ribbed shorty | Safe, semiautomatic | --- | 1977 | 1985 | |
| R6222 | AR-15 .22 LR Conversion Kit |
.22 LR | --- | --- | --- | 1.2 | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | 1990 | --- | |
| R6420 | AR-15 Carbine | .223 | 16 | Standard | 1:7" | 5.8 | Yes | Yes | No | A1 | A2 | Tapered | Ribbed shorty | Safe, semiautomatic | --- | 1985 | 1987 | ||||
| R6430 | Sporter Lightweight | 9x19mm | 16 | Standard | 1:10" | 7.1 | No | Yes | No | A1 | A2 | Tapered | Ribbed shorty | Safe, semiautomatic | --- | 1992 | --- | Has special deflector | |||
| R6450 | AR-15 9mm Carbine | 9x19mm | 16 | Standard | 1:10" | 6.3 | No | Yes | No | A1 | A2 | Tapered | Ribbed shorty | Safe, semiautomatic | --- | 1985 | 1987 | ||||
| R6500 | AR-15A2 | .223 | 20 | A2 | 1:7" | 7.8 | Yes | Yes | No | A1 | A1 | A2 | Tapered | Ribbed cylindrical | Safe, semiautomatic | --- | 1984 | 1988 | Also made in 1989 only | ||
| R6510 | AR-15A2 | .222 | 20 | A2 | 1:7" (?) | 7.8 | Yes | Yes | No | A1 | A1 | A2 | Tapered | Ribbed cylindrical | Safe, semiautomatic | --- | Made for export to countries where .223 Rem was considered a military round | ||||
| R6520 | AR-15A2 Gov't Model Carbine | .223 | 16 | Standard | 1:7" | 5.8 | Yes | Yes | Yes | A1* | A2 | A2 | Tapered | Ribbed shorty | Safe, semiautomatic | --- | 1988 | 1990 | |||
| R6530 | Sporter Lightweight | .223 | 16 | Standard | 1:7" | 6.7 | Yes | No | Yes | A1* | A2 | A2 | Tapered | Ribbed shorty | Safe, semiautomatic | --- | 1991 | --- | |||
| R6550 | AR-15A2 Gov't Model | .223 | 20 | A2 | 1:7" | 7.5 | Yes | Yes | Yes | A2* | A2 | A2 | Tapered | Ribbed cylindrical | Safe, semiautomatic | --- | 1988 | 1990 | |||
| R6551 | Sporter Target | .223 | 20 | A2 | 1:7" | 7.5 | Yes | No | Yes | A2* | A2 | A2 | Tapered | Ribbed cylindrical | Safe, semiautomatic | --- | 1991 | --- | |||
| R6600 | AR-15A2 H-BAR | .223 | 20 | HBAR | 1:7" | 8.0 | Yes | Yes | Yes | A2* | A2 | A2 | Tapered | Ribbed cylindrical | Safe, semiautomatic | --- | 1986 | 1991 | |||
| R6600DH | AR-15A2 Delta H-BAR | .223 | 20 | HBAR | 1:7" | 10.0 | Yes | Yes | Yes | A2* | A2 | A2 | Tapered | Ribbed cylindrical | Safe, Semiautomatic | --- | 1987 | 1990 | 3-9X scope, cheekpiece | ||
| R6601 | Sporter Match HBAR | .223 | 20 | HBAR | 1:7" | 8.0 | Yes | No | Yes | A2* | A2 | A2 | Tapered | Ribbed cylindrical | Safe, semiautomatic | --- | 1991 | --- | |||
| R6601DH | Sporter Match Delta HBAR | .223 | 20 | HBAR | 1:7" | 10.0 | Yes | No | Yes | A2* | A2 | A2 | Tapered | Ribbed cylindrical | Safe, semiautomatic | --- | 1991 | 1992 | 3-9X scope, cheekpiece | ||
| R6700 | Sporter Competition HBAR | .223 | 20 | HBAR | 1:9" | 8.5 | Yes | No | Yes | A2 | A2 (detachable) | A2 | Tapered | Ribbed cylindrical | Safe, semiautomatic | --- | 1992 | --- | |||
| R6700CH | Sporter Competition HBAR (select) | .223 | 20 | HBAR | 1:9" | 10.5 | Yes | No | Yes | A2 | A2 (detachable) | A2 | Tapered | Ribbed cylindrical | Safe, semiautomatic | --- | 1992 | --- | 3-9X scope, cheekpiece | ||
| R6700DC | Sporter Conversion Kit | .223 | 20 | HBAR | 1:9" | 5.5 | Yes | No | Yes | --- | none | A2 | Tapered | Ribbed cylindrical | Safe, semiautomatic | --- | 1993 | --- | Flattop | ||
| R6830 | Sporter Lightweight | 7.62x39mm | 16 | HBAR | 1:12" | 7.5 | Yes | No | Yes | A2 | A2 | A2 | Tapered | Ribbed shorty | Safe, semiautomatic | --- | 1993 | --- | |||
| R6850DC | Sporter Conversion Kit | 7.62x39mm | 16 | HBAR | 1:12" | 4.2 | Yes | No | Yes | --- | none | A2 | Tapered | Ribbed shorty | Safe, semiautomatic | --- | 1993 | --- | Flattop | ||
| R6851DC | Sporter Conversion Kit | 7.62x39mm | 20 | HBAR | 1:12" | 5.4 | Yes | No | Yes | --- | none | A2 | Tapered | Ribbed cylindrical | Safe, semiautomatic | --- | 1993 | --- | Flattop | ||
| R6900DC | Sporter Conversion Kit | .223 | 20 | HBAR | 1:9" | 5.8 | Yes | No | Yes | --- | A2 | A2 | Tapered | Ribbed cylindrical | Safe, semiautomatic | --- | 1993 | --- | |||
| 633 | 9mm Submachine Gun | 9x19mm | 7 | Standard | 1:10" | 5.4 | No | No | Yes | A2 | A1 | Grooved | None | Tapered | Smooth cylindrical | Safe, semiautomatic, full automatic | 700-900 | Mechanical buffer, flip-down front sight | |||
| 633HB | 9mm Submachine Gun | 9x19mm | 7 | Standard | 1:10" | 5.4 | No | No | Yes | A2 | A1 | Grooved | None | Tapered | Smooth cylindrical | Safe, semiautomatic, full automatic | 700-900 | Hydraulic buffer, flip-down front sight | |||
| 634 | 9mm Submachine Gun | 9x19mm | 7 or 10.5 | Standard | 1:10" | 5.4 | No | No | Yes | A2 | A1 | Grooved | None | Tapered | Smooth cylindrical on 7" model, ribbed shorty on 10.5" model | Safe, semiautomatic | --- | Flip-down front sight on 7" model | |||
| 635 | 9mm Submachine Gun | 9x19mm | 7 or 10.5 | Standard | 1:10" | 5.4 | No | No | Yes | A2 | A1 | Grooved | None | Tapered | Smooth cylindrical on 7" model, ribbed shorty on 10.5" model | Safe, semiautomatic, full automatic | 700-900 on 7" model, 800-1000 on 10.5" model | Flip-down front sight on 7" model | |||
| 639 | 9mm Submachine Gun | 9x19mm | 7 or 10.5 | Standard | 1:10" | 5.4 | No | No | Yes | A2 | A1 | Grooved | None | Tapered | Smooth cylindrical on 7" model, ribbed shorty on 10.5" model | Safe, semiautomatic, 3-shot burst | 700-900 on 7" model, 800-1000 on 10.5" model | Flip-down front sight on 7" model | |||
| 701 | M16A2 Rifle | .223 | 20 | HBAR | 1:7" | 7.9 | Yes | Yes | Yes | A2 | A2 | Grooved | A2 | 13 5/8" | Tapered | Ribbed cylindrical | Safe, semiautomatic, full automatic | 700-950 | |||
| 705 | M16A2 Rifle | .223 | 20 | HBAR | 1:7" | 7.9 | Yes | Yes | Yes | A2 | A2 | Grooved | A2 | 13 5/8" | Tapered | Ribbed cylindrical | Safe, semiautomatic, 3-shot burst | 700-950 | Standard U.S. Military service rifle | ||
| 715 | M16A2 Rifle | .223 | 20 | HBAR | 1:7" | 7.9 | Yes | Yes | Yes | A2 | A1 | Grooved | A2 | 13 5/8" | Tapered | Ribbed cylindrical | Safe, semiautomatic, full automatic | 700-950 | |||
| 719 | M16A2 Rifle | .223 | 20 | HBAR | 1:7" | 7.9 | Yes | Yes | Yes | A2 | A1 | Grooved | A2 | 13 5/8" | Tapered | Ribbed cylindrical | Safe, semiautomatic, 3-shot burst | 700-950 | |||
| 720 | M16A2 (M4) Carbine | .223 | 14.5 | HBAR stepped | 1:7" | 5.7 | Yes | Yes | Yes | A2 | A1 or A2 | Grooved | A2 | Tapered | Ribbed shorty | Safe, semiautomatic, full automatic or 3-shot burst | 700-950 | ||||
| 727 | M16A2 Carbine | .223 | 14.5 | HBAR stepped | 1:7" | 5.7 | Yes | Yes | Yes | A2 | A2 | Grooved | A2 | Tapered | Ribbed shorty | Safe, semiautomatic, full automatic | 700-950 | ||||
| 733 | M16A2 Commando | .223 | 11.5 | HBAR | 1:7" | 5.4 | Yes | Yes | Yes | A2 | A2 | Grooved | A2 | Tapered | Ribbed shorty | Safe, semiautomatic, full automatic | 700-1000 | ||||
| 735 | M16A2 Commando | .223 | 11.5 | HBAR | 1:7" | 5.4 | Yes | Yes | Yes | A2 | A2 | Grooved | A2 | Tapered | Ribbed shorty | Safe, semiautomatic, 3-shot burst | 700-1000 | ||||
| 750 | M16A2 Light Machine Gun | .223 | 20 | MG HBAR | 1:7" | 12.8 | No | No | Yes | A2 | A2 | Grooved | A2 | 13 5/8" | Tapered | Square LMG | Safe, full automatic | 600-750 | Bipod, front grip, carry handle, fires from open bolt |
