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

TROY Industries

Sharps Bros. SBUR04 Billet Upper Receiver in Black

Sharps Bros.

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

LBE UNLIMITED

Rock River Arms RRAGE 3G A4 Carbine Upper Receiver in 5.56mm NATO with 16-Inch Chrome Moly 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