Angstadt Arms UDP-9 Features The Angstadt Arms UDP-9 is designed around a dedicated 9mm bolt assembly that works with a standard AR-15 hammer and mil spec fire control group keeping the rifle familiar to anyone experienced with the AR platform. It features last round bolt hold open a flared magwell and an oversized trigger guard each contributing to faster reloads and easier operation under stress. The absence of a forward assist or dust cover reflects the pistol caliber carbine s streamlined design while a threaded bolt catch screw adds a layer of reliability. Chambered in 9mm Luger with a 1:10 inch twist rate the 16 inch chrome moly steel barrel is finished in black Melonite and threaded with an A2 flash hider installed. A 5.50 inch free float ultra light M-LOK handguard keeps the rifle s overall weight down while providing ample space for lights lasers or other accessories. The mil spec 1913 Picatinny rail on the flat top receiver accepts any optic the shooter chooses to mount from a red dot to a low power variable scope. Finished in Flat Dark Earth Cerakote on the receiver with a black synthetic B5 Bravo stock and black polymer grip the UDP-9 presents a two tone look built for both function and style. The rifle accepts most aftermarket 9mm PCC triggers and all Glock aftermarket magazines though Angstadt Arms recommends factory Glock magazines for best results. At 6 pounds and an overall length of 32 inches the UDP-9 remains a maneuverable and lightweight option for home defense range use or competition shooting. The semi automatic action and selector switch style safety provide intuitive familiar operation for AR-15 shooters making the switch to a pistol caliber platform. Shipping with one 15 round magazine the rifle is ready to use immediately while remaining compatible with higher capacity Glock style magazines for extended range sessions. The Angstadt Arms UDP-9 is for sale at GrabAGun for shooters seeking a dependable Glock magazine fed 9mm AR-15 style rifle. Angstadt Arms UDP-9 Specifications Manufacturer: Angstadt Arms Model: UDP-9 Caliber: 9mm Capacity: 15+1 Action: Semi-Auto Barrel Length: 16 Barrel Material: Chrome Moly Steel Barrel Finish: Black Melonite Twist Rate: 1:10 Muzzle Device: A2 Flash Hider Receiver Material: Aluminum Receiver Finish: Flat Dark Earth Cerakote Receiver Description: Picatinny Rail Stock: B5 Bravo Black Grips: Black Polymer Handguard: M-LOK Flat Dark Earth Cerakote Safety: Selector Switch Overall Length: 32 Overall Height: 3.20 Weight: 6 lbs Includes: One 15-Round Magazine Available At: GrabAGun