Fits: Kimber 2K11 and 1911 The TAG Precision RMR Adapter Plate is designed for use with the Kimber 2K11/1911 firearms. This plate allows the customer to fit an RMR / SRO optic (or optic with a similar mating pattern) to a Kimber 2K11 or 1911. It is 100% USA made in Dallas, TX. The adapter plate is made from 4140 heat treated steel, has form-tapped threads for strength, and QPQ Black Nitride coating for long life durability. The CNC precision machined adapter plate is designed to endure everything, a competition shooter or the abuse of everyday carry.Installation Instructions Compatible With Optics: A Trijicon RMR Type 2 A Trijicon SRO A Holosun HS507 Series A Swampfox Optics Libery 2 / Justice 2 A Gideon Optics Granite RMR A Others with RMR/SRO footprint Includes: A CNC machined adapter plate A TORX driver A 4X 6-32 x .38" TORX Screws A 8X 6-40 x .25" TORX Screws