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Offset Optic Mount - Offset Plate, Sig Romeo 1/ 1 Pro For 1.5'''' - 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: 430104531
Overview
This modular offset mount is designed for AR15 rifles and gives the shooter a choice of 35 or 45 degree red dot placement without needing extra components. The 35 degree setting positions the optic closer to slimmer, smaller scopes, while the 45 degree setting offers more clearance around wider turrets or larger, higher-magnification optics. When the rifle is canted to use the offset sight, the optic stays centered over the bore and maintains a lower 1/3 co-witness height. It is a practical setup for hunters and shooters who want a streamlined transition to a secondary aiming point on a top Picatinny rail.
Why Hunters Choose the Arisaka Defense
Modular Design
Lets you choose 35 or
35 Degree
Position places the red dot
45 Degree
Position provides added clearance around
Attachment Top
Picatinny rail of an AR15
Maintains Lower
1/3 co-witness height when the
Key Features
- Modular offset optic mount for a red dot sight on an AR15 top Picatinny rail.
- Selectable 35-degree or 45-degree offset position without additional components.
- 35-degree position places the optic closer to slimmer, smaller scopes.
- 45-degree position provides added clearance around wider turrets or larger scopes.
- Maintains centered bore alignment when the rifle is canted.
- Designed to preserve a lower 1/3 co-witness height.
Best Used For
- AR15 users wanting a canted red dot setup for close-range transitions on a top Picatinny rail.
- Shooters running slimmer, smaller scopes and needing the 35-degree offset position.
- Users with wider turrets or larger, higher-magnification scopes who need extra clearance.
- Hunters and rifle owners building a modular offset optic setup without extra components.
Specifications
| Co Witness Height | Lower 1/3 |
|---|---|
| Compatible Optic | Sig Romeo 1 / 1 Pro |
| Compatible Scope Size | 1.5'' - 1.8'' |
| Modular | Yes |
| Mount Type | Offset optic mount |
| Offset Positions | 35 degree or 45 degree |
| Patent Pending | Yes |
| Rail Compatibility | Top Picatinny rail |
| Rifle Compatibility | AR15 rifle |
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 provides added clearance around wider turrets and larger scopes.
- Designed for attachment to the top Picatinny rail of an AR15 rifle.
- Maintains a lower 1/3 co-witness height when the rifle is canted.
Considerations & Trade-offs
- Designed for AR15 top Picatinny rail use, so it is not a universal mount for other platforms or rail setups.
- The 35 degree and 45 degree positions solve different clearance needs, but choosing the wrong angle for your optic and scope combination may limit comfort or access.
- This listing is specific to a Sig Romeo 1/1 Pro offset plate and 1.5"–1.8" scope mount range, so compatibility is narrower than a more general-purpose mount.
- The product description does not include the base and optic components, so confirm exactly what is included before planning the setup.
Suggested Comparisons
- Offset red dot optic mounts
- Picatinny rail optic mounts
- AR-15 optic mounting accessories
Suggested Accessories
- Picatinny rail mount
- Red dot sight
- AR-15 rifle accessories
- Optic mounting hardware
Frequently Asked Questions
What red dot footprint does this offset plate fit?
This version is listed for the Sig Romeo 1 / Romeo 1 Pro footprint.
What rifle setup is this mount designed for?
It is designed to attach to the top Picatinny rail of an AR15 rifle.
Can I choose the offset angle?
Yes. The mount allows either a 35-degree or 45-degree offset position without requiring additional components.
When would the 35-degree versus 45-degree position be used?
The 35-degree position is described as bringing the red dot closer to slimmer, smaller scopes, while the 45-degree position provides additional clearance around wider turrets or larger, higher-magnification scopes.
Does the description say how the optic sits when the rifle is canted?
Yes. It 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.