The TRUGLO Scope Base Mouting Adapter gives you the option to mount your favorite scope on your favorite shotgun or rifle. This scope base mount is constructed from aircraft grade aluminum. Compatible with picatinny and weaver-style rings or mounts. Features:For use with drilled and tapped receiversScrews and wrench includedCompatible with Picatinny and Weaver-style rings or mountsCNC-machined aircraft grade aluminum