Ruger Mini-14 Ranch Rifles are rugged centerfire autoloading rifles that provide reliable performance with the following features: Rugged adjustable "Ghost Ring" aperture rear sight. Rugged protected blade front sight. Improved receiver with rounded contours. Hardwood, synthetic or laminate stock with rifle-style buttpad. Simple, rugged Garand-style breechbolt locking system, with a fixed-piston gas system and self-cleaning, moving gas cylinder. Chambered in the popular and proven .223 Rem. cartridge or 6.8mm Rem. SPC (All-Weather Mini-14 Ranch Rifle only) Integral sling swivels."