MTD precision rifle scope bases are the interface between your receiver and your optic and, therefore, a critical piece of hardware. We offer a suite of 20 MOA Picatinny/MIL-STD-1913 scope bases for the most popular action types. We also offer 30 MOA Scope Bases, 40 MOA Scope Bases, and 50 MOA Scope bases for extended long-range or rimfire shooters. Our bases are made from 6061-T6 aircraft-grade aluminum and are Mil-Spec Type III hard-anodized.