Angstadt Arms UDP-9 9mm Rifle 15rd 16″ Threaded
Specs at a glance
About this product
The Angstadt Arms UDP-9 is an AR-style 9mm rifle built for compact handling and practical range use. It accepts double-stack GLOCK magazines and features a last-round bolt hold open for immediate visual confirmation when the magazine is empty. The 16″ chrome-moly barrel is finished in black melonite and is 1/2×28 threaded to accept common muzzle devices or sound-mitigation accessories where legal. Controls and ergonomics follow AR-15 conventions for a familiar, serviceable platform.
Key Specifications
- The caliber is 9mm Luger.
- The magazine capacity is 15 rounds.
- The barrel is 16″ chrome-moly with a 1/10″ twist.
- The barrel is 1/2×28 threaded to accept compatible muzzle devices.
- The rifle features a last-round bolt hold open when the magazine is empty.
- The lower is 7075-T6 billet aluminum and offered with finish options including matte black hard-coat anodized or Cerakote variants.
- The upper is a 7075-T6 billet aluminum slick-side receiver with a sized ejection port and no forward assist or dust cover.
- The handguard is a 15″ ultralight M-LOK design with mounting at the 3, 6, 9 and 12 o’clock positions.
- The stock and grip are B5 Systems Bravo rifle stock and B5 pistol grip.
- The overall length is 32 inches.
Built with practical features and AR-pattern familiarity, the UDP-9 is suited for range work, PCC competition, and general-purpose shooting where a compact 9mm platform is preferred. Its compatibility with Glock-style magazines and AR-15 controls makes it straightforward to maintain and customize with common aftermarket parts.
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