Holosun 407/507K Adapter for FN509. CNC machined from 6061 aircraft aluminum with a Type III Hard Anodized finish to provide a durable optic-mounting solution for FN 509 pistols.
The Holosun 407/507K Adapter for FN 509 is a rugged, reliable mount designed to allow Holosun 407/507K-pattern optics to be installed on FN 509 pistols. CNC machined from 6061 aircraft aluminum and finished with a Type III Hard Anodized coating, the adapter is built for repeated use and exposure to the elements. Its construction is intended to provide a stable mounting surface under operational recoil and regular field use. Suitable uses for this adapter include duty or service carry and range or competition optics mounting.
Product Specifications
The model is 407/507K Adapter.
The manufacturer is Holosun.
The product type is Adaptor.
The subcategory is Mounting Accessories.
The fit is specified as FN 509.
The color is Black.
The adapter is CNC machined from 6061 aircraft aluminum.
The finish is Type III Hard Anodized.
The design is described as a rugged and reliable mount for optics use.
The unit is intended to withstand recoil and regular field use.
The packaging UPC is 810047071112.
This adapter provides a straightforward, durable interface for mounting compatible Holosun optics to FN 509 pistols. Built from aircraft-grade aluminum with a protective Type III finish, it balances low weight with the durability needed for frequent use at the range or in duty applications. If you need a clean, OEM-style mounting solution for 407/507K-pattern optics on an FN 509, this adapter offers a no-nonsense option engineered for consistent performance.
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