Gemtech Integra 15-22 Suppressed Upper for Smith & Wesson M&P15-22, 22 LR

Gemtech

Primary Weapons Systems UXR Elite Conversion Kit in .223 Wylde for 16-inch Barrel

Primary Weapons Systems

Battle Arms Development WORKHORSE 556 Upper Receiver - 16 Inch Black for .223 Remington

BATTLE ARMS DEVELOPMENT

Battle Arms Development WORKHORSE 16-Inch Upper Receiver in Black for 5.56 NATO

BATTLE ARMS DEVELOPMENT

Rock River Arms Tactical Carbine A4 Mid-Length Upper in .450 Bushmaster, 16-Inch Barrel

Rock River Arms

Rock River Arms RRA CMP Coyote Carbine Upper in .300 Blackout with 16-Inch Barrel

Rock River Arms