Electronic SightsArisaka DefenseSold by Brownells

Arisaka Defense

Offset Optic Mount - Plate #12 Tall Height (1.9''''-2.2'''') Optic Plate

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Modular Offset

Optic mount for a red

Selects 35

45 degree offset position without

35 Degree

Position sits closer to slimmer,

45 Degree

Position adds clearance for wider

Attaches Top

Picatinny rail of an AR15

$25.00
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SKU: 100040232

Overview

Designed for AR15 setups that pair a primary optic with a red dot sight, this offset mount gives the user a choice of 35 or 45 degree positioning without needing extra components. The 35 degree option places the red dot closer to slimmer, smaller scopes, while the 45 degree option provides more clearance around wider turrets or larger, higher magnification optics. Mounted to the top Picatinny rail, it keeps the offset sight centered over the bore when the rifle is canted and maintains a lower 1/3 co-witness height. It is a practical option for hunters and shooters who want a modular offset sight solution on a rifle already set up around an AR15 platform.

Why Hunters Choose the Arisaka Defense

Modular Design

Lets you choose 35 or

No Additional

Components required for selecting the

35 Degree

Option sits closer to slimmer,

45 Degree

Option provides added clearance around

Attaches Top

Picatinny rail of an AR15

Key Features

  • Modular offset optic mount for a red dot sight
  • Selects 35 or 45 degree offset position without extra components
  • 35 degree position sits closer to slimmer, smaller scopes
  • 45 degree position adds clearance for wider turrets or larger scopes
  • Attaches to the top Picatinny rail of an AR15 rifle
  • Maintains lower 1/3 co-witness height when the rifle is canted

Best Used For

  • AR15 users mounting a red dot alongside a slimmer scope on the top Picatinny rail.
  • Shooters needing a 35-degree offset position for tighter placement near compact optics.
  • Users running larger, higher-magnification scopes who need 45-degree clearance around turrets.
  • Hunters or shooters wanting a canted backup sight while keeping lower 1/3 co-witness height.

Pros

  • Modular design lets you choose 35 or 45 degree offset positioning.
  • No additional components required for selecting the offset angle.
  • 35 degree option sits closer to slimmer, smaller scopes.
  • 45 degree option provides added clearance around wider turrets.
  • Attaches to the top Picatinny rail of an AR15 rifle.
  • Maintains lower 1/3 co-witness height when the rifle is canted.

Considerations & Trade-offs

  • This mount is designed for AR15 top Picatinny rails, so it is not a universal solution for other platforms or rail types.
  • The 35 degree and 45 degree positions serve different optic setups; choosing the wrong angle can leave less clearance than intended around smaller scopes or larger turrets.
  • It is intended for use with a canted rifle position and a lower 1/3 co-witness height, so it may not suit shooters looking for a different sight picture or mounting geometry.
  • The product is a plate-based optic mount, so compatibility depends on the specific optic plate setup rather than being a one-piece fit for every red dot sight.

Suggested Comparisons

  • AR-15 optic mounts
  • Offset red dot sight mounts
  • Picatinny rail mounting accessories
  • Lower 1/3 co-witness optic setups

Suggested Accessories

  • Red dot sight
  • Picatinny rail mount
  • AR15 rifle optic accessory
  • Optic plate

Frequently Asked Questions

What mounting positions does this offset optic mount support?

It allows the user to select either a 35-degree or 45-degree offset position for a red dot sight without needing additional components.

What is the difference between the 35-degree and 45-degree positions?

According to the product description, the 35-degree position brings the red dot sight closer to slimmer, smaller scopes, while the 45-degree position provides additional clearance around wider turrets or larger, higher magnification scopes.

What rifle setup is this mount designed for?

It is designed to attach to the top Picatinny rail of an AR15 rifle.

Does this mount keep the optic centered when the rifle is canted?

Yes. The description states that when the rifle is canted to use the offset red dot sight, the optic remains centered over the bore and maintains a lower 1/3 co-witness height.

Is this a complete optic system or just the mount?

This product is the offset optic mount itself. The provided data describes it as a modular mounting solution, but it does not list any included optic or additional components.