The Howa Mini .450 Bushmaster is a japan-made bolt-action rifle chambered in .450 Bushmaster, introduced in 2018. Primary use: hunting, sport. Type: Rifle Action: Bolt-Action Caliber: .450 Bushmaster Capacity: 5 Year introduced: 2018, Japan Weight: 112 oz Overall length: 44" Status: Active Intended use: hunting, sport