Rock River Arms

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,...

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...

CALIBER:.350 LEGENDUPPER RECEIVER:FORGED A4BARREL:16 INCH STAINLESS STEEL 1:16 TWIST CRYOGENICALLY TREATEDMUZZLE DEVICE:RRA OPERATOR BRAKE 1236 THREADGAS BLOCK:LOW PROFILE GAS BLOCK CAR LENGTH GAS...

CALIBER:.450 BUSHMASTERUPPER RECEIVER:FORGED A4BARREL:16 INCH STAINLESS STEEL 1:24 TWIST CRYOGENICALLY TREATEDMUZZLE DEVICE:RRA OPERATOR BRAKE 5832 THREADGAS BLOCK:LOW PROFILE GAS BLOCK MIDLENGTH GAS...

Rock River Arms BB0470 LAR15M RRAGE 3G Complete Upper 5.56x45mm NATO 16 Black Aluminum Rec 15 MLOK Handguard A2 Flash Hider No Forward Assist

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...

Rock River Arms BLK0592 LAR15M Coyote Carbine Complete Upper 300 Blackout 16 Black Aluminum Rec 12.50 MLOK Handgaurd Smith Vortex Flash Hider

Rock River Arms SOC0820V1 LAR15M CLB Complete Upper 458 SOCOM 16 Chome Moly Bull Barrel Black Aluminum Rec 13 MLOK Handguard Beast Brake Fits AR15