Angstadt Arms UDP-9 | 9mm | 6-inch Threaded Barrel

The Angstadt Arms UDP-9 is a compact AR-style pistol chambered in 9mm Luger that accepts Glock-pattern magazines and includes a last-round bolt hold open. Its billet 7075-T6 upper and lower construction, free-float M-LOK handguard and continuous top rail make it suitable for controlled-range work and pistol-caliber carbine (PCC) competition. A compact reflex sight such as the Holosun HS507C pairs well with the UDP-9 while staying well under a $1,000 budget and preserves rapid target acquisition without adding significant bulk.

Product Specifications

• The caliber is 9mm Luger.
• The magazine capacity is 15 rounds.
• The barrel is made from chrome moly, measures 6 inches, has a 1:10 twist, and features a black melonite finish with an A2-style flash suppressor.
• The barrel is threaded 1/2×28 and can accept a suppressor with the appropriate accessories.
• The bolt assembly is a 9mm bolt assembly designed for use with a standard AR-15 hammer.
• The fire control group is a Milspec AR-15/M4 Fire control group and is compatible with most aftermarket 9mm PCC triggers.
• The lower is 7075-T6 billet aluminum and is offered with multiple finish options as described by the manufacturer.
• The upper is a 7075-T6 billet aluminum slick side upper with an appropriately sized ejection port and no forward assist or dust cover.
• The handguard is an Angstadt Arms 5.5-inch free-float ultra light M-LOK handguard.
• The pistol includes a B5 Systems pistol grip.
• Controls and handling features include a last-round bolt hold open, flared magwell for faster reloads, an integrated oversized trigger guard, and a threaded bolt catch screw.
• The top of the firearm features a continuous mil-spec 1913 Picatinny rail for optics and accessories.
• The overall length measures 22 inches.
• The UPC is 867114000117.

The UDP-9 combines AR-style ergonomics with 9mm ammunition convenience to serve as a focused range and competition platform. Its threaded 6″ barrel, continuous rail and compatibility with Glock-pattern magazines make it versatile for optics and accessory setups while retaining compact handling for on-range movement and controlled technical stages.

Related Videos: