The Weaver Flat-Top Rail Riser with 20 MOA Cant turns your flat-top weapon into the perfect optics platform with the Flat Top Riser Rail. It is made from aircraft-grade 6061-T6 aluminum and has Type III hard coat anodizing for years of rugged use. It is engineered to provide the optimal mounting height for all types of optic and ring combinations. This flat-top riser rail model comes in a 20 MOA cant version. This multi-slot base is constructed of tough, lightweight aluminum so it can withstand the most powerful recoil.