Full-length AR-556 carbine chambered in .300 Blackout with a 16-inch barrel. Offers the full pistol-brace-free experience of the AR-556 platform while using the subsonic-capable .300 BLK cartridge. Ships with a 30-round magazine. Type: Semi-Auto Rifle Action: Gas-Operated Caliber: .300 Blackout Capacity: 30 Year introduced: 2020, USA Weight: 6.5 oz Overall length: 32.3" Status: Active Intended use: Hunting, Range, Suppressor Host