This modular comb will provide the same length of pull on your compact Ruger American rifle that's on the standard American rimfire. The higher 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. This stock module is included with all Standard Ruger American Rimfire Models and is intended to be sold as a modular adaptation for the compact models.