The Leupold®, 2-piece, Rifleman Base Mounts are precision machined from rugged, aircraft-grade aluminum to provide the toughness and strength you expect, without adding additional weight. These Weaver™ Style, matte black scope mounts are made to accommodate ALL Thompson Center® Encore and Omega Muzzleloaders. The reliable, Thompson Center® mounts are proudly made in the USA, and come complete with Allen screws and wrench needed for installation.