This Weaver 1-Piece Top Mount Aluminum Base is available in a gloss black finish. It a very versatile mount and available for most firearms. The build is sold and durable, and will start at the bottom of your Weaver base. Weaver bases are available in side and top mounts as well as one- and two-piece sets. They attach to your firearm easily and will not require modifications. In fact, they come with screws that are custom made to hard fasten to the bottom of your Weaver base.