Christensen Arms CA-15 in .300 Blackout with 16-inch carbon fiber barrel, combining ultra-light construction with the subsonic-capable hunting cartridge. Type: Rifle Action: Semi-Automatic Caliber: .300 Blackout Capacity: 30 Year introduced: 2017, USA Weight: 80 oz Overall length: 32" Status: Active Intended use: Hunting, Suppressor Host