Savage Arms Single Shot Adapter for Axis & 110 Models - Model 56306

Savage Arms

Luth-AR A1 Complete Upper Receiver – Black Anodized for Retro M16 Builds

Luth-AR

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

LanTac USA LLC LANTAC USR Forged Upper Receiver in Black - Model 01-RV-UP-USR-SF15

LanTac USA LLC

TROY Industries AK47 Railed Top Gas Tube with Picatinny Rail in Black, Part SRAI-AK1-T0BT-00

TROY Industries

LBE Unlimited AR Upper Receiver with Forward Assist and Ejection Port Cover

LBE UNLIMITED

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

Rock River Arms

CMMG 22LR AR Conversion Kit 3-10 Round Bravo - Easy Swap for Your Rifle

CMMG

Rise Armament RISE CMPLT Uppr 22 ARC 18-inch Patriot Brown AR-15 Upper Receiver

Rise Armament

Radical Firearms 5.56mm Upper Receiver with 16-inch Barrel and M-LOK in Black

Radical Firearms