AOS TrijiconA(R) RMR Plate sold as a single plate in either Rear Iron Forward of the RMR or Rear Iron Behind the RMR Precision Machined from ASTM steel and coated in Diamond Like Carbon (DLC). Includes fasteners for the adapter plate and optic. Designed for use with the Agency Optic System (AOS) slide cut. Recommended Torque Specs for Plate Screws: 8-10 inch lbs with a tiny bit of blue loctite. Recommended Torque Specs for Optic Screws: 10-12 inch lbs with a tiny bit of blue loctite. Please note: While the 507C/508T have the same footprint as the Trijicon RMR, it utilizes shorter fasteners. If you are purchasing this plate to install on a 507C/508T, you will need to purchase shorter screws