Windham VEX-SS Complete Upper Receiver 20 Inch Barrel .223/5.56mm NATO

Precision machined from 416R stainless steel. Includes matched bolt and carrier machined from Carpenter 158 steel. Charging handle. Twenty inch barrel is matte finished and fluted. Picatinny rail gas block and 1/2 inch mini-risers included. Right hand button rifling is 1:8 inches. No bayonet lug or flash hider.