Angstadt Arms AR-15 Pistol Upper Receiver Assembly 9mm Luger Barrel

7075-T6 billet aluminum slick side pistol caliber upper receiver with appropriately sized ejection port
Lightweight profile barrel made from 4150 chrome-moly steel
Free float handguard with M-LOK mounting interface on the 3, 6, & 9 O’clock positions
Handguard ID: 1.375* The last ¾” of the handguard is bored out to 1.405”, allowing most aftermarket sound suppressors 1.39″ in diameter and smaller to tuck inside of the handguard
Black nitride 9mm AR-15 bolt carrier group. For use with a standard AR-15 hammer
Compatible with both GLOCK and COLT style 9mm dedicated lower receivers.
A2 style flash hider
Mil-spec charging handle