The C&H Precision plates are designed, manufactured and shipped from their 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. Features : For Converting Springfield Armory Prodigy to Holosun 407K/507K Stainless Steel Hardware Included Plates are made from 6061 aluminum Mil-Spec Type III Hard Anodized