Angstadt Arms - 6" 9mm Complete Upper Assembly

The Angstadt Arms 6" 9mm Complete Upper Assembly is a top-tier choice for those looking to enhance their AR-15 platform with a pistol caliber upper. This assembly is designed to be compatible with any 9mm AR-15 lower receiver, making it a versatile option for firearm enthusiasts. It features the same high-quality components found in Angstadt Arms' renowned UDP-9 pistol, offering reliability and performance right out of the box.

This complete upper assembly includes a 7075-T6 billet aluminum slick side upper receiver with a properly sized ejection port, ensuring smooth operation. The 6" 9mm lightweight profile barrel is crafted from 4150 chrome-moly steel and features a 1-10” twist rate, providing excellent accuracy and durability. The barrel is threaded with a 1/2x28 TPI, allowing for the attachment of various muzzle devices.

The assembly also includes an Angstadt Arms 5.5” free float ultra light M-LOK handguard, which offers 2 QD swivel mounting points and an M-LOK mounting interface on three sides. The top features a mil-spec 1913 Picatinny rail for additional accessory mounting. This handguard is designed with an ID of 1.375", with the last ¾” bored out to 1.405", accommodating most aftermarket suppressors up to 1.39" in diameter.

Completing the assembly is a black nitride 9mm AR-15 bolt carrier group, compatible with a standard AR-15 hammer, and a mil-spec charging handle. The assembly is topped off with an Angstadt Arms 9mm flash hider, ensuring a complete and ready-to-use package.

Key Features

• Receiver Material: 7075-T6 billet aluminum
• Barrel Length: 6"
• Barrel Material: 4150 chrome-moly steel
• Twist Rate: 1-10”
• Thread Pitch: 1/2x28 TPI
• Handguard Length: 5.5”
• Handguard Features: M-LOK mounting interface, 2 QD swivel points
• Compatible Magazines: GLOCK and COLT style 9mm
• Weight: 2.6 lbs
• Caliber: 9mm NATO

Specifications

• Color: Black
• Model: 0940 UDP Upper
• SubCategory: Complete Upper Receivers
• UPC: 853427007585