McMillan TAC-50 A1-R2 in .50 BMG with 29-inch barrel and redesigned recoil system, the latest evolution of the record-setting anti-materiel rifle. Type: Rifle Action: Bolt-Action Caliber: 50 BMG Capacity: 5 Year introduced: 2015, USA Weight: 330 oz Overall length: 57.5" Status: Active Military use: Yes Intended use: Military anti-materiel, extreme long-range sniper