Ruger Modular Stock System Stock Module designed to be used with aftermarket scopes or mounted sights. The high comb height raises the shooter's cheek placement, aligning the eye with the mounted optics. It features the shorter length of pull buttstock, ideal for shooters who prefer a shorter length of pull. Fits Ruger rifles with the Modular Stock System including selected 10/22 and Ruger American Rimfire rifles. Genuine Ruger Factory Accessory. 1.84" Comb, 12.50" Length of Pull.