Arisaka Offset Optic Plate – 1.93″ – Holosun 509T


The Arisaka Defense Holosun 509T Offset Mount Optic Plate is designed for use with their Offset Optic Mount Base system.

(1 customer review)

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This adapter plate allows you to mount your Holosun 509T red dot sight at an angle to your scope for quick transition from long to short range targets and is designed to allow your red dot to clear a scope that is utilizing a mount between 1.9″ and 2″ inches tall. For example, if you are running a scope with a 1.93″ mount, you will want to choose this tall adapter plate to match that height to provide a seamless cheek weld and transition. It is CNC machined from 6061-T6 aluminum and is Mil-Spec hardcoat anodized black making it lightweight, durable, and corrosion resistant. This adapter plate is the solution you need for mounting your Holosun 509T red dot sight to your offset picatinny base.

Note: This is the adapter plate only. Offset mounting base sold separately. Do not exceed 20 inch pounds of torque on the screws that attach the optic to the plate.


  • Holosun 509T


  • Tall for clearance of 1.9″-2″ scope mounts
  • Mounts directly to offset mount base (These screws are only included with the base)
  • Includes screws for attaching optic to adapter plate
  • Machined from 6061-T6 aluminum
  • Mil-Spec hardcoat anodized black

Additional information

Weight .1 lbs
Dimensions 4 × 4 in

1 review for Arisaka Offset Optic Plate – 1.93″ – Holosun 509T

  1. davidwzimmer (verified owner)

    These Arisaka plates are great, and there’s quite a few options for other optics. Excellent quality that you’d expect from Arisaka.

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