DISCOVERYOPT Heavy Duty Cantilever Scope Mount, 20 MOA, 34mm or 30mm, 1.5 inchDISCOVERYOPT heavy duty 34 30mm scope mount features Inner Bore Grinding, achieving smaller radial and coaxial errors than other models on the market. This ensures higher durability, recoil resistance, and stability, always holding zero even after repeated high recoil firing, well suited for powerful riflescope. The 20 MOA built in cant allows for a more available elevation adjustment range for the scope, enabling precise targeting at longer