0 / 20 MOA picatinny scope mount for Thompson Center Contender; Compatible with picatinny or weaver rings; Ambidextrous bevel on both sides; Full-length picatinny cross slots for flexible mounting; Central channel reduces mass and maintains factory iron sight use; Made in the U.S.A. with mounting hardware included; Type II anodized for durability; Recommended torque: 20 inch lbs with blue Loctite