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Offset Optic Mount - Offset Plate, Trijicon Rmrcc For 1.5'''' To 1.8'''' Scope Mount
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$15.75
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SKU: 430104537
Overview
This modular offset mount is built for AR15 setups that pair a red dot with a primary scope, giving the shooter a choice of 35 or 45 degree placement without adding extra components. The 35 degree position sits 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 streamlined transition to a close-range aiming point on a scoped rifle.
Why Hunters Choose the Arisaka Defense
Modular Design
Lets you choose 35 or
35 Degree
Position places the red dot
45 Degree
Position adds clearance around wider
Attaches Top
Picatinny rail of an AR15
Maintains Lower
1/3 co-witness height when the
Key Features
- Modular offset mount for a red dot sight on an AR15 top Picatinny rail.
- Selects either 35-degree or 45-degree offset without additional components.
- 35-degree position sits closer to slimmer, smaller scopes.
- 45-degree position adds clearance around wider turrets or larger scopes.
- Keeps the optic centered over the bore when the rifle is canted.
- Maintains a lower 1/3 co-witness height.
Best Used For
- AR15 users mounting a red dot alongside a slimmer, smaller scope on the top Picatinny rail.
- Shooters needing a 35-degree offset position for a closer fit around compact optics.
- Users running wider turrets or larger scopes who want the 45-degree offset option.
- Hunters and range shooters who prefer a canted backup sight while keeping lower 1/3 co-witness height.
- AR platform owners wanting a modular offset mount without adding extra components.
Specifications
| Co Witness Height | Lower 1/3 co-witness |
|---|---|
| Compatibility | Trijicon Rmrcc |
| Mount Type | Offset optic mount |
| Offset Positions | 35 degrees; 45 degrees |
| Patent Status | Patent pending |
| Platform | AR15 rifle |
| Rail Type | Top Picatinny rail |
| Scope Mount Range | 1.5'''' to 1.8'''' |
Pros
- Modular design lets you choose 35 or 45 degree offset without extra components.
- 35 degree position places the red dot closer to slimmer, smaller scopes.
- 45 degree position adds clearance around wider turrets and larger scopes.
- Attaches to the top Picatinny rail of an AR15 rifle.
- Maintains a lower 1/3 co-witness height when the rifle is canted.
- Designed for Trijicon RMRcc compatibility as listed in the product title.
Considerations & Trade-offs
- This mount is designed for the top Picatinny rail of an AR15 rifle, so it is not a universal solution for other platforms or rail setups.
- The 35 degree position is intended for slimmer, smaller scopes, while the 45 degree position is meant to provide more clearance around wider turrets or larger, higher magnification scopes.
- Use depends on how the rifle is canted and how the primary optic is configured, so fit and sighting setup should be checked before relying on it in the field.
- The product is specific to a Trijicon RMRcc offset plate configuration, so compatibility should be confirmed against the intended red dot sight and mount setup.
Suggested Comparisons
- AR-15 optic mounting accessories
- Offset red dot sight mounts
- Picatinny rail accessories
- Red dot sight mounting plates
Suggested Accessories
- Picatinny rail mount hardware
- Offset red dot sight mount
- AR15 optic mounting accessories
- Red dot sight adapter plate
Frequently Asked Questions
What mounting positions does this offset optic mount offer?
It allows the user to select either a 35 degree or 45 degree offset position for a red dot sight without requiring additional components.
What is this mount designed to attach to?
It is designed to be attached to the top Picatinny rail of an AR15 rifle.
When would I choose the 35 degree position instead of the 45 degree position?
The 35 degree position brings the red dot sight closer to slimmer, smaller scopes. The 45 degree position provides additional clearance around wider turrets or larger, higher magnification scopes.
Does the optic stay centered when the rifle is canted?
Yes. The product 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.
What brand makes this mount?
The manufacturer listed is Arisaka Defense.