Ruger's Stock Module"" High Comb/Standard Pull"" fits Ruger American Rimfire"" 10/22 and any Ruger rifle with the Modular Stock System. This comb is intended for use with aftermarket scopes or mounted sights. The high comb height raises the shooter's cheek placement"" putting the eyes in line with the mounted optics. It has the standard length of pull buttstock"" ideal for shooters that prefer a longer length of pull. Fits any Ruger(R) rifle with the Modular Stock System. Genuine Ruger(R) Factory Accessory.