AR-15 Variants - Numbered Colt Civilian Models - R Series Models

R 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
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
R6003 AR-15 Sporter Carbine (SP1 Carbine; Bundled with 3x scope) 2nd Generation S-1 A1 No No 16 in. A1 1:12 Short Ribbed Yes A1
R6004 AR-15 Sporter (SP1; Bundled with Colt Reflex Sighting System) 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 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
R6510 AR-15A2 Sporter II (Special export model in .222 Remington) A2 S-1 A2 Yes No 20 in. A2 1:12 Ribbed Yes A2
R6520 AR-15A2 Government Carbine 3rd Generation S-1 A2 Yes Yes 16 in. A1 1:7 Short Ribbed Yes A2
R6521 AR-15A2 Government Carbine (Special export model with receiver block and large pin upper receiver) 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
R6550K AR-15A2 Government (w/ factory installed .22 Long Rifle conversion kit) 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
R6600DH AR-15A2 Delta HBAR (bundled w/ Tasco 3–9x scope and cheekpiece) A2 S-1 A2 Yes Yes 20 in. HBAR 1:7 Ribbed Yes A2
R6600K AR-15A2 HBAR (w/ factory installed .22 Long Rifle conversion kit) 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
R6601DH Sporter Match Delta HBAR (bundled w/ Tasco 3–9x scope and cheekpiece) 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
R6700CH Sporter Competition HBAR (bundled w/ Tasco 3–9x scope and cheekpiece) A2 S-1 Flattop Yes Yes 20 in. HBAR 1:9 Ribbed No A2
R6700S Sporter Competition HBAR (bundled w/ Tasco 3–9x scope) A2 S-1 Flattop Yes Yes 20 in. HBAR 1:9 Ribbed No A2
R6701 Sporter Competition HBAR (Special limited edition production run) 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 (7.62x39mm) 3rd Generation S-1 A2 Yes Yes 16 in. HBAR 1:12 Short Ribbed No A1
R6830 Sporter Lightweight (7.62x39mm) A2 S-1 A2 Yes Yes 16 in. HBAR 1:12 Short Ribbed No A1

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