Arisaka Defense | Offset Plate for Holosun 509T

The Arisaka Defense offset plate provides an optic-specific mounting solution for Holosun 509T sights. It fits standard-height scope mounts measuring 1.5” to 1.8” and positions the optic for application-specific setups. Each plate is CNC machined from 6061-T651 aluminum and finished with MIL-A-8625 Type III hard coat anodize for durability. Recommended applications include everyday carry (EDC) setups and competition shooting where optic placement and consistent sighting are important.

Product Specifications

• The manufacturer is Arisaka Defense.
• This item is an Offset Plate designed for optic-specific mounting.
• The plate is compatible with the Holosun 509T sight.
• Designed to fit scope mounts measuring 1.5” to 1.8” in height.
• This listing corresponds to Standard Height Plate 13 for Holosun 509T.
• The plate is CNC machined from 6061-T651 aluminum.
• The finish is MIL-A-8625 Type III hard coat anodize.
• The color is Black.
• The product type is a Mount with an Offset configuration.
• The subcategory is Optic Specific Mounts.
• Fits / Used For: Holosun.
• Referenced compatible model: HE509-RD.
• The UPC is 601557939869.

Built to a precise fit for Holosun 509T optics and produced from aircraft-grade aluminum with a durable hardcoat finish, this offset plate offers a stable, repeatable mounting surface for purpose-driven setups. Its specific compatibility and robust construction make it a practical choice for shooters focused on reliable optic placement in EDC and competitive environments.