The Arisaka Defense Plate #11 Tall Height optic plate is a replacement mounting interface for the modular Arisaka offset optic mount system, purpose-built for rifles running larger or higher-magnification scopes with 1.9" to 2.2" tube diameters. This tall-height plate pairs with Aimpoint Micro (T1, T2, H1, H2), SIG Romeo 4, SIG Romeo 5 (non-5X), Holosun HS403 (non-A variant), HS503, HS515, and HS530 red dot sights, giving you a straightforward way to add a co-witnessing offset red dot to your AR platform without major rail clutter or compatibility guesswork.

What makes the modular Arisaka system practical is its upgrade path: you buy the base once and swap plates as your optic collection grows. The Plate #11 is sized to clear the taller turret profiles of full-power scopes while maintaining the lower 1/3 co-witness geometry when your rifle is canted for the offset sight. The plate is CNC machined from 6061-T6 aluminum and hard-coat anodized to MIL-A-8625 Type III spec, so it'll handle recoil and field abuse without degradation.

Arisaka's design philosophy keeps things simple: solid engineering, repeatable accuracy, and no marketing fluff. The base and plates are reversible for left or right-hand configurations, and the whole system mounts on your AR's top Picatinny rail using twin recoil lugs and a clamping screw. If you're running a precision or hunting scope and want a backup aiming reference without wedging a red dot into tight quarters, this plate solves the geometry problem.

The Arisaka Defense Plate #11 Tall Height optic plate is a replacement mounting interface for the modular Arisaka offset optic mount system, purpose-built for rifles running larger or higher-magnification scopes with 1.9" to 2.2" tube diameters. This tall-height plate pairs with Aimpoint Micro (T1, T2, H1, H2), SIG Romeo 4, SIG Romeo 5 (non-5X), Holosun HS403 (non-A variant), HS503, HS515, and HS530 red dot sights, giving you a straightforward way to add a co-witnessing offset red dot to your AR platform without major rail clutter or compatibility guesswork.

What makes the modular Arisaka system practical is its upgrade path: you buy the base once and swap plates as your optic collection grows. The Plate #11 is sized to clear the taller turret profiles of full-power scopes while maintaining the lower 1/3 co-witness geometry when your rifle is canted for the offset sight. The plate is CNC machined from 6061-T6 aluminum and hard-coat anodized to MIL-A-8625 Type III spec, so it'll handle recoil and field abuse without degradation.

Arisaka's design philosophy keeps things simple: solid engineering, repeatable accuracy, and no marketing fluff. The base and plates are reversible for left or right-hand configurations, and the whole system mounts on your AR's top Picatinny rail using twin recoil lugs and a clamping screw. If you're running a precision or hunting scope and want a backup aiming reference without wedging a red dot into tight quarters, this plate solves the geometry problem.