AR-57 Upper Assembly 5.7 X 28 16 Barrel

Overview

AR-57 Upper Assembly Features The AR-57 Upper Assembly combines functionality with advanced material technology. The 16 barrel finished in black melonite offers exceptional durability and corrosion resistance while the 1:9 twist rate is tailored for the 5.7x28mm cartridge ensuring accurate and stable projectile flight. The assembly s bolt carrier buffer tube and flash hider all crafted from 8620 steel alloy also receive a black melonite treatment enhancing the overall resilience and longevity of the components. Ergonomically designed for performance this upper assembly features a forged 7075 T6 monobloc aluminum construction providing a sturdy yet lightweight platform. The integration of a radial muzzle brake not only reduces recoil but also minimizes muzzle rise allowing for quicker follow-up shots and improved accuracy. The AR-57 Upper Assembly is drilled and tapped ready for customization with optics or other accessories to suit the shooter s preferences. AR-57 Upper Assembly Specifications Caliber: 5.7x28mm Barrel Length: 16 Twist Rate: 1:9 Finish: Black Melonite Frame Material: 7075 T6 Monobloc Aluminum Bolt Carrier Material: 8620 Steel Alloy Sights: None Muzzle: Radial Muzzle Brake Additional Features: Black Melonite Treatment on Bolt Carrier Buffer Tube and Flash Hider