Arisaka Defense Offset Mount Base Picatinny Aluminum Black


The Patent Pending Arisaka Offset Optic Mount is a modular mounting solution that allows the user to select a 35 or 45 degree offset position for a red dot sight without requiring additional components. The 35 degree position brings the red dot sight up closer to slimmer, smaller scopes, while the 45 degree position provides additional clearance around wider turrets or larger, higher magnification scopes.

The Arisaka Offset Optic Mount is designed to be attached to the top Picatinny rail of an AR15 rifle. When the rifle is canted to make use of the offset red dot sight, the optic remains centered over the bore and maintains a lower 1/3 co-witness height. The base and optic plates can be reversed, allowing for use on the left or right side.


A wide selection of red dot sights are supported with six interchangeable optic plates (sold separately) including the following:

  • Docter, Eotech, Insight, Meopta, Vortex Venom
  • Trijicon RMR and SRO, Holosun 507C
  • C-More
  • Leupold Delta Point
  • Aimpoint Micro T1/T2 and clones
  • Aimpoint Acro

Two heights of plates are offered; standard (1.5″ to 1.8″) and tall (1.9″ to 2.2″). The base and optic plates can be reversed, making the mount fully ambidextrous. It is recommended that you choose the plate height that corresponds to your primary optic height. For example, if your scope is mounted in a 1.54” height mount, you’d choose the regular height plate for your offset red dot. This ensures a consistent cheek weld and seamless transition between your primary optic and offset red dot. A wide selection of red dot sights are supported with interchangeable optic plates.