Designed as a cost-effective upgrade for Ruger American Predator & Ranch rifle models equipped with an AR magazine compatible stock, the Hunter American Stock - Ruger AmericanA(R) Short Action, STANAG Magazine Well features a fully adjustable length of pull, comb height, enhanced ergonomics, and reinforced construction. Constructed of reinforced polymer and an anodized aluminum bedding block with steel recoil lugs, the Hunter American Stock - Ruger AmericanA(R) Short Action, STANAG Magazine Well requires no gunsmithing and is your true "drop-in" solution. Tune your rifle to fit your needs with shooter-focused ergonomics that allow LOP adjustments from 13. Mfg: Magpul