The Wilson Combat Forged AR-15 Upper Receiver is an M4 Mil-Spec style receiver precision CNC machined from 7075-T6 aluminum forgings for maximum durability and Mil-Spec Type 3 hard coat anodized black. This receiver comes unmarked for a clean, custom look. The same top quality upper used as the basis for Wilson Combat's famous custom rifles. Stripped receiver - No forward assist or ejection port cover installed. Forging stamp may vary.