Palmetto State Armory PA-15 AR-15 in .450 Bushmaster with 16-inch barrel, making the big-bore straight-walled hunting cartridge accessible at the lowest price point on the market. Type: Rifle Action: Semi-Automatic Caliber: .450 Bushmaster Capacity: 5 Year introduced: 2019, USA Weight: 96 oz Overall length: 32" Status: Active Intended use: Hunting