The Rock River Arms LAR-300 is a .300 Blackout AR-15 carbine with RRA's standard two-stage trigger and a 16-inch barrel, suitable for suppressed and unsuppressed use with the full range of .300 Blackout loads. Type: Rifle Action: Semi-Automatic Caliber: .300 Blackout Capacity: 30 Year introduced: 2012, USA Weight: 62 oz Overall length: 32.5" Status: Active Intended use: Hunting, Home Defense, Tactical