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Offset Optic Mount - Offset Plate, Holoson 509t For 1.9'''' To 2.2'''' Scope Mount
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$25.00
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SKU: 430104530
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 option sits closer to slimmer, smaller scopes, while the 45 degree option provides more room around wider turrets or larger, higher magnification optics. Mounted to the top Picatinny rail, it keeps the offset sight centered over the bore and maintains a lower 1/3 co-witness height when the rifle is canted. It is a practical setup piece for hunters and shooters who want a streamlined transition to a secondary optic 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 offers added clearance around
Attaches Top
Picatinny rail of an AR15
Maintains Centered
Bore alignment and lower 1/3
Key Features
- Modular offset optic mount for a red dot sight
- Selects 35 or 45 degree offset position without extra components
- 35 degree setting sits closer to slimmer, smaller scopes
- 45 degree setting adds clearance around 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 shooters wanting a canted red dot setup alongside slimmer scopes
- Users running larger or higher-magnification scopes needing extra turret clearance
- Hunters who want a modular offset mount without additional components
- Rifle setups requiring a lower 1/3 co-witness height when canted
Specifications
| Centering | Centered over the bore |
|---|---|
| Co Witness Height | Lower 1/3 |
| Compatible Optic | Holoson 509t |
| Mount Type | Offset optic mount |
| Offset Positions | 35 degree, 45 degree |
| Patent Pending | Yes |
| Platform | AR15 rifle |
| Rail Type | Picatinny |
| Scope Mount Range | 1.9'''' to 2.2'''' |
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 offers added clearance around wider turrets and larger scopes.
- Attaches to the top Picatinny rail of an AR15 rifle.
- Maintains centered bore alignment and lower 1/3 co-witness height when canted.
Considerations & Trade-offs
- Modular offset positions are limited to 35 or 45 degrees, so setup is straightforward but not fully adjustable beyond those two options.
- Designed for a top Picatinny rail on an AR15 rifle, so it is not a universal mount for other platforms or rail types.
- The 35-degree position is intended to sit closer to slimmer, smaller scopes, while the 45-degree position adds clearance for wider turrets or larger, higher-magnification scopes; the right choice depends on your optic setup.
- When the rifle is canted, the optic remains centered over the bore and maintains a lower 1/3 co-witness height, which is useful to note when planning sight height and cheek position.
Suggested Comparisons
- Offset red dot sight mounts
- AR-15 Picatinny rail accessories
- Cantilever optic mounting solutions
- Red dot sight mounting plates
Suggested Accessories
- Picatinny rail mount
- Red dot sight
- AR-15 optic accessory
- Offset optic plate
Frequently Asked Questions
What mounting positions does this offset optic mount support?
The mount 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 attach to the top Picatinny rail of an AR15 rifle.
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.
Does the product description say how the optic sits when the rifle is canted?
Yes. 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 mount sold with a specific optic included?
The provided data identifies it as an offset plate for a Holosun 509T, but it does not state that a red dot sight is included.