The Nosler M21 .280 AI is a usa-made bolt-action rifle chambered in .280 Ackley Improved, introduced in 2019. Primary use: hunting, sport. Type: Rifle Action: Bolt-Action Caliber: .280 Ackley Improved Capacity: 5 Year introduced: 2019, USA Weight: 112 oz Overall length: 44" Status: Active Intended use: hunting, sport