The Angstadt Arms complete upper receiver pistol assembly is ready to run out of the box with any 9mm AR-15 lower receiver. Featuring the same high quality parts that go into the UDP-9 pistol, this completed upper receiver is compatible with both GLOCK and COLT style 9mm magazines. The hand guard features 2 QD swivel mounting points and a continuous top mil-spec 1913 picatinny rail with lightening cut.

Features

• 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