The McMillan TAC-50 is a long-range anti-materiel and anti-personnel sniper rifle. The TAC-50 is based on previous designs from the same company, which first appeared during the late 1980s. As of 2017 it holds the record for the longest confirmed sniper kill. McMillan makes several versions of .50 caliber rifles, based on the same proprietary action, for military, law enforcement and civilian use. It is produced in Phoenix, Arizona, in the United States by McMillan Firearms Manufacturing.