Standard

Odin Works Billet Receiver, Stripped Upper, Fits AR15, Black, No Forward Assist, Includes Dust Cover UPPER-Billet-ODIN-1

Primary Weapons Systems MK116 MOD 1-M, Upper Receiver, Fits AR-15, 223 Wylde, 16.1" Barrel, 1:8" Twist, FSC 556 Muzzle Device, 15.05" PWS MLOK Handguard, Anodized Finish, Black, Includes Radian Raptor Ambidextrous Charging Handle MK1-M1U-223-16

Primary Weapons Systems MMK116 MOD 1-M, Upper Receiver, 762X39, 16.1" Barrel, Triad30 Muzzle Device, Anodized Finish, Black, Radian Raptor Charging Handle, MLOK Handguard, Fits AR-15 MK1-M1U-762X39-16

Primary Weapons Systems MK116 MOD 2-M, Upper Receiver, Fits AR-15, 223 Wylde, 16.1" Barrel, 1:8" Twist, FSC 556 Muzzle Device, 15" PWS PicLok MLOK Handguard, Anodized Finish, Black, Includes Radian Raptor Ambidextrous Charging Handle MK1-M2U-223-16

Primary Weapons Systems MK116 MOD 2-M, Upper Receiver, 762x39, 16.1" Barrel, Triad30 Muzzle Device, Anodized Finish, Black, Radian Raptor Charging Handle, MLOK Handguard, Fits AR-15 MK1-M2U-762X39-16

Primary Weapons Systems UXR Elite, Conversion Kit, 223 Wylde, 16" Barrel, Black, Includes Bolt and Barrel UXR-CK-223-16

Radical Firearms Complete Upper Assembly, 223 Remington/5.56 NATO, 16" Barrel, 1:7 Twist, Black, MLOK Handguard, A2 Flash Hider RF00325

Radical Firearms Complete Upper Assembly, 300 Blackout, 16" Barrel, 1:8 Twist, Black, MLOK Handguard, A2 Flash Hider RF00375

Radical Firearms Complete Upper Assembly, 7.62X39, 16" Barrel, 1:10 Twist, Black, MLOK Handguard, A2 Flash Hider RF00397

Rise Armament Complete Upper, 22 ARC, 18" Stainless Steel Barrel, 1:7 Twist, 1/2X28 Threaded, Rifle-Length Gas System, 15.25" Free Float M-LOK Handguard, Black Nitride Bolt Carrier Group, Ambidextrous Charging Handle, Anodized Finish, Black RA-22ARC-CU-BLK-18

Rise Armament Complete Upper, 22 ARC, 18" Stainless Steel Barrel, 1:7 Twist, 1/2X28 Threaded, Rifle-Length Gas System, 15.25" Free Float M-LOK Handguard, Black Nitride Bolt Carrier Group, Ambidextrous Charging Handle, Cerakote Finish, Patriot Brown RA-22ARC-CU-BRN-18

Rise Armament Complete Upper, 6MM ARC, 18" Stainless Steel Barrel, 1:7 Twist, 1/2X28 Threaded, Rifle-Length Gas System, 15.25" Free Float M-LOK Handguard, Black Nitride Bolt Carrier Group, Ambidextrous Charging Handle, Anodized Finish, Black RA-6ARC-CU-BLK-18

Rise Armament Complete Upper, 6MM ARC, 18" Stainless Steel Barrel, 1:7 Twist, 1/2X28 Threaded, Rifle-Length Gas System, 15.25" Free Float M-LOK Handguard, Black Nitride Bolt Carrier Group, Ambidextrous Charging Handle, Cerakote Finish, Patriot Brown RA-6ARC-CU-BRN-18

Rock River Arms Tactical Carbine, Complete Upper Receiver, 350 Legend, 16" Barrel, RRA Operator Muzzle Brake, RRA 13" Free Float M-LOK Handguard, Anodized Finish, Black, Fits AR-15, 10 Rounds, 1 Magazine, Includes Bolt Carrier Group and Charging Handle Assembly 350L0328

Rock River Arms Tactical Carbine, Complete Upper Receiver, 450 Bushmaster, 16" Barrel, Mid-Length Gas System, RRA Operator Muzzle Brake, RRA 13" Free Float M-LOK Handguard, Anodized Finish, Black, Fits AR-15, 5 Rounds, 1 Magazine, Includes Bolt Carrier Group and Charging Handle Assembly 450B0592

Rock River Arms RRAge 3G, Complete Upper Receiver, 223 Remington/5.56 NATO, 16" Barrel, A2 Flash Hider, RRA 15" Free Float M-LOK Handguard, Anodized Finish, Black, Fits AR-15, Includes Bolt Carrier Group and Charging Handle Assembly BB0470

Rock River Arms Coyote Carbine, Complete Upper Receiver, 300 Blackout, 16" Barrel, Smith Vortex Flash Hider, RRA 12.5" Free Float M-LOK Handguard, Anodized Finish, Black, Fits AR-15, Includes Bolt Carrier Group and Charging Handle Assembly BLK0592

Rock River Arms Tactical Carbine, Complete Upper Receiver, 458 SOCOM, 16" Barrel, RRA Operator Muzzle Brake, RRA 15" Free Float M-LOK Handguard, Anodized Finish, Black, Fits AR-15, Includes Bolt Carrier Group and Charging Handle Assembly SOC0564

Radian Weapons Complete Upper, 223 Wylde, 17.5" Barrel, 1:8 Twist, Dead Air KeyMo Flash Hider, Intermediate Length Gas, 17" MLOK Handguard, Radian Raptor-SD Charging Handle, Radian Enhanced Bolt Carrier Group, Cerakote Finish, Black, Fits AR-15 R0026

Radian Weapons Complete Upper, 223 Wylde, 14.5" Pinned (16" OAL) Barrel, 1:8 Twist, Dead Air KeyMo Flash Hider, Mid Length Gas, 14" MLOK Handguard, Radian Raptor-SD Charging Handle, Radian Enhanced Bolt Carrier Group, Cerakote Finish, Flat Dark Earth, Fits AR-15 R0466

Radian Weapons Complete Upper, 223 Wylde, 16" Barrel, 1:8 Twist, Dead Air KeyMo Flash Hider, Mid Length Gas, 15" MLOK Handguard, Radian Raptor-SD Charging Handle, Radian Enhanced Bolt Carrier Group, Cerakote Finish, Gray, Fits AR-15 R0471

Radian Weapons Complete Upper, 223 Wylde, 16" Barrel, 1:8 Twist, Dead Air KeyMo Flash Hider, Mid Length Gas, 15" MLOK Handguard, Radian Raptor-SD Charging Handle, Radian Enhanced Bolt Carrier Group, Cerakote Finish, Flat Dark Earth, Fits AR-15 R0473

Radian Weapons Complete Upper, 223 Wylde, 17.5" Barrel, 1:8 Twist, Dead Air KeyMo Flash Hider, Intermediate Length Gas, 17" MLOK Handguard, Radian Raptor-SD Charging Handle, Radian Enhanced Bolt Carrier Group, Cerakote Finish, Gray, Fits AR-15 R0478

Radian Weapons Complete Upper, 223 Wylde, 17.5" Barrel, 1:8 Twist, Dead Air KeyMo Flash Hider, Intermediate Length Gas, 17" MLOK Handguard, Radian Raptor-SD Charging Handle, Radian Enhanced Bolt Carrier Group, Cerakote Finish, Flat Dark Earth, Fits AR-15 R0480