Burris Optics 410600 Steel Scope Bases deliver unmatched mounting versatility with superior construction. Designed for peak performance, these solid steel bases ensure compatibility with all Weaver-style, Picatinny-style, and mil-spec rings, providing a reliable platform for your optics. Engineered with minimal height and weight for improved handling Mil-spec cross slots enhance stability and strength Reversible front base accommodates a wide variety of scope mounting lengths Upgrade your shooting experience with these durable and adaptable scope bases.