Bushmaster Squaredrop Pistol
Features: Available in 5.56 NATO and 300 AAC Blackout with 10", 9" and 7" barrel lengths; 4150 chrome-moly steel barrel (90907); 416 Stainless Steel barrel (90034/90035); FNC treated barrels for maximum durability and longevity; Mil Std upper & lower; SquareDrop rail for free-floated accuracy and accessory mounting ease; SB tactical arm brace; Improved trigger control with ALG defense fire control group AAC SquareDrop and Blackout flash hider; 30 round magazine capacity.