RRA LAR-300 X-Series in .300 Blackout. 16-inch barrel, free-float X-Series handguard, optimized for both supersonic and subsonic loads. Type: Rifle Action: Semi-automatic Caliber: .300 Blackout Capacity: 30 Year introduced: 2013, USA Weight: 65 oz Overall length: 34.5" Status: Active Intended use: Home Defense/Hunting