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 mild steel. 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 .285 M3H Plate Mounting Screws Qty 3 - 4-40 x .250 FH Plate Mounting Screws Compatible FirearmsRMR Footprint Plates Compatible OpticsAimpoint ACRO, Aimpoint ACRO P1, Aimpoint ACRO P2, C&H Duty, C&H Duty XL, DUTY-XL (STEEL)