•  Short Stroke Piston System
•  Hammer Forged Barrel (5.56 NATO), Nitride Treated 
•  One Piece Bolt Carrier
•  1-7 Twist rate
•  Flash Suppressor
•  Proprietary RAPID CLEAN One-piece Piston System
•  Authentic T91 Hand Guard
•  Authentic T91 Charging Handle
• Works with standard height rear sights
• NO REAR SIGHT INCLUDED
• Please note: Muzzle brake style may vary

Wolf Performance Arms Offers Shooters the finest and most reliable AR-15 piston driven barreled upper produced in the world. The Wolf A1 upper features a short stoke piston system, unsurpassed durability and reliability for functioning parts and action while confidently maintaining performance under adverse weather and climatic conditions. Additionally the uppers have superior ergonomics for both comfort and tactical applications. The Wolf A1 upper is the premier choice when it comes to home defense, recreation, hunting, and tactical applications.