***These recommendations should be used as a guide and may not fit all applications (Based on 50mm Objective lens contacting barrel/AR forends). There are several easy to find ring height calculators available online. *** Rem 700 footprints = low rings (0.92") (up to 40 MOA scope rail) Ruger RPR = medium rings (1.26") Ruger American = low rings (0.92") Savage 110 = low rings (0.92") Tikka = low rings (0.92") Sako = low rings (0.92") AR Platform = ARP Rigid Mount (1.50") med rings (1.26")