Angstadt Arms UDP-9 Pistol SBA3 Brace.

The UDP-9 Pistol with SB Tactical SBA3 stabilizing brace is a compact AR-15 style firearm chambered in 9mm and fed with GLOCK magazines. It features last round bolt hold open. Last round bolt hold open on an empty magazine. Flared magwell for faster reloads. Integrated, oversized trigger guard. 7075-T6 billet aluminum lower with a matte black hard-coat anodized finish. 7075-T6 billet aluminum slick side upper receiver with appropriately sized ejection port and no forward assist or dust cover. Threaded bolt catch screw. 9mm bolt assembly for use with a standard AR-15 hammer. 6” 9mm barrel in chrome moly with a 1/10 twist, black melonite finish and A2 style flash suppressor. Barrel is threaded 1/2×36 and can accept a suppressor. SB Tactical SBA3 pistol stabilizing brace with 5-position adjustable length of pull settings and an integral, ambidextrous QD sling socket. Magpul K2 pistol grip. Angstadt Arms 5.5” free float M-LOK hand guard with a modern, ergonomic, 7 side design that allows for 45 degree offset mounting options. Continuous top mil-spec 1913 picatinny rail. Accepts all Glock aftermarket magazines. We recommend using factory Glock magazines. Includes one 15 round Glock magazine.