AR pistol with Aero's M4E1 receiver, 10.5-inch .300 Blackout barrel optimized for suppressed use, and SB Tactical brace. Type: Pistol Action: Semi-Automatic Caliber: .300 Blackout Capacity: 30 Year introduced: 2018, USA Weight: 62 oz Overall length: 27" Status: Active Intended use: Home Defense, Suppressor Use