The Holosun 509 adapter plate for the FNX-45 (part no. 509PLT-FNX45) mounts a Holosun 509 optic to that pistol’s slide, built to handle hard-hitting recoil and rough field use. Holosun CNC machines the adapter from 6061 aircraft aluminum with a Type III hard anodized finish, giving it the durability demanded by law enforcement, military, and everyday shooters alike. Among FNX-45-specific red dot mounts, this 509 adapter is a purpose-built accessory for that pistol platform.

Key Specifications

• This adapter is built for the Holosun 509 optic specifically.
• The fitment is the FNX-45 pistol slide.
• The construction is 6061 aircraft aluminum with a Type III hard anodized finish.
• The adapter is built to withstand hard-hitting recoil and rough tactical use.

Frequently Asked Questions

Is this adapter specific to the Holosun 509? Yes, it’s designed for that optic’s footprint.

What finish protects this adapter? A Type III hard anodized finish over 6061 aircraft aluminum for durability.

Buy the Holosun 509 Adapter, FNX-45

An FNX-45 slide running a Holosun 509 gets a rugged, direct-fit adapter here. Order it from our Lubbock, Texas gun shop and it ships fast.