This American Rifle Company M10 QD-L 1.57" mount has 30mm rings and 0 MOA. With two innovative spring-loaded, pivoting rail clamps, this quick detach mount is faster and quicker than one with levers. Made from high-strength, lightweight aluminum and anodized with Mil-A-8625 Type III hardcoat, this easy to install mount has recoil reduction and crowned rail interface for a precise return-to-zero. American Rifle Company designs, manufactures, and markets the products necessary to defend our freedom so that we may live happily to pursue our dreams. The products are highly engineered, and derived from the pursuit of a truthful and comprehensive understanding of the fundamentals. American Rifle Company American Rifle M10 QD-L 30mm 40mm Mount M10-2-00-30-40-00