The Mini-14 is a lightweight semi-automatic rifle manufactured by Sturm, Ruger & Co. used by law enforcement personnel and civilians. A .223 caliber (5.56 mm) firearm, it is made in a number of variants, including the Ranch Rifle (a basic, civilian variant), the Mini-14 GB, (designed for military and law-enforcement use) and the Mini Thirty, which is chambered for 7.62×39mm.