The C&H Precision plates are designed, manufactured and shipped from our small family owned business in Coastal Georgia. Each plate is precision machined to the tightest tolerances on HAAS CNC machines and each plate goes through multiple quality checks before shipping to our customers. SPECIFICATION: Material: Plates are made from 6061 aluminum. All mounting hardware is Stainless Steel Finish: Plates are MIL-SPEC Type III Hard Anodized - Black INCLUDED: Qty 1 - Optic Plate Qty 3 - 6-32 x .500 M3H Holosun 407k / 507k , Vortex Defender CCW , CHPWS EDC / EDC Enclosed Mounting Screws Compatible FirearmsS&W M2.0(TM) C.O.R.E., Smith & Wesson M&P C.O.R.E. 2.0 Compatible OpticsC&H EDC, C&H EDC Enclosed, C&H HNT-R Max, C&H MAX, Holosun 407K, Holosun 507k, Osight S