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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 27. Chapters: Ruger revolvers, Ruger semi-automatic pistols, Ruger Mini-14, Ruger P series, Ruger SR series, Ruger 10/22, Ruger Standard, Ruger Vaquero, Ruger Redhawk, Ruger MK II, Ruger Blackhawk, Ruger Super Redhawk, Sturm, Ruger, Ruger Security Six, Ruger MK III, Ruger M77, Ruger GP-100, Ruger SP-101, Ruger LCP, Ruger Police Carbine, Ruger Bisley, Ruger Gold Label, Ruger 77/22, Ruger No. 1, Ruger Single Six, Ruger LCR, Ruger 10/17, Ruger Alaskan, Ruger SR-556, Ruger MP9, Ruger Hawkeye, Ruger Old Army, Ruger LC9, RMR. Excerpt: The Mini-14, Mini Thirty, and Mini-6.8 are small, lightweight semi-automatic carbines manufactured by the U.S. firearms company Sturm, Ruger. The Mini-14 non-target versions can fire both the .223 Remington cartridge and the similar military 5.56x45mm cartridge. The target model Mini-14 rifles are chambered only for the .223 Remington cartridge. The Mini Thirty uses the 7.62x39mm and the Mini-6.8 fires 6.8 mm Remington SPC. Ruger offered a selective fire variant of the Mini-14, the AC-556, to police and military customers. AC-556 models have a slightly longer receiver (shared with early production "series 180" models) to allow for full automatic operation. These models are available with features such as short barrels and bayonet lugs. The Mini-14GB model is a semi-automatic variant for police and military sale with the additional factory options of a short barrel, folding paratrooper stock, flash suppressor and a bayonet lug. Designed by L. James Sullivan and William B. Ruger, the rifle employs an investment cast, heat-treated receiver and a version of the M1 rifle locking mechanism with a self-cleaning, fixed-piston gas system. The Mini-14 product page describes it as a "simple, rugged Garand-style breechbolt locking system, with a fixed-piston gas system and self-cleaning, moving gas cylinder...".