The Sparta stock conversion offers the owners of Ruger Mini-14/Mini-30/6.8 Ranch rifles the convenience of a pistol grip stock, with an adjustable length-of-pull, and adjustable cheek-riser. Equipped with a full-length, aluminum top - rail designed to M1913 specifications, it offers a virtually limitless ability to accommodate various iron and glass sighting systems. Constructed from a proprietary, Zytel-based, carbon-fiber filled, polymer, the stock is impervious to all common firearm solvents and lubricants. The stock is equipped with four (4) hard points for push-button, quick-detach sling-swivels, and has a storage compartment in the pistol grip. The fore-end has pre-molded hard-points for a rail at the six o'clock position requiring only minor drilling to accommodate the mounting hardware (rail and mounting hardware not included).