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Offset Optic Mount - Offset Plate, Holosun 407k & 507k For 1.9''''- 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: 430104535
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 scopes, while the 45 degree option creates more room around wider turrets or larger magnification optics. When the rifle is canted, the optic stays centered over the bore 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 provides added clearance around
Attaches Top
Picatinny rail of an AR15
Maintains Lower
1/3 co-witness height when the
Key Features
- Modular offset optic mount for red dot sight use on an AR15 top Picatinny rail.
- Selects either 35-degree or 45-degree offset without additional components.
- 35-degree position places the optic closer to slimmer, smaller scopes.
- 45-degree position adds clearance around wider turrets or larger scopes.
- Maintains centered bore alignment when the rifle is canted.
- Preserves a lower 1/3 co-witness height.
Best Used For
- AR15 users mounting a Holosun 407k or 507k on a top Picatinny rail
- Shooters wanting a 35-degree offset for slimmer scopes and tighter optic placement
- Users needing 45-degree offset clearance around wider turrets or larger magnified scopes
- Hunters or rifle owners who prefer a canted red dot setup with lower 1/3 co-witness height
Specifications
| Attachment Interface | Top Picatinny rail |
|---|---|
| Co Witness Height | Lower 1/3 |
| Compatible Optic | Holosun 407k & 507k |
| Compatible Scope Mount Range | 1.9''''- 2.2'''' |
| Mount Type | Offset optic mount |
| Offset Positions | 35 degree or 45 degree |
| Patent Pending | Yes |
| Platform | 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.
- Attaches 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
- This mount is designed for an AR15 top Picatinny rail, so it is not a universal offset solution for other platforms or rail systems.
- The 35-degree setting is intended to sit closer to slimmer, smaller scopes, while the 45-degree setting provides more clearance around wider turrets or larger, higher-magnification scopes.
- It is specified for Holosun 407k and 507k optics, so fitment should be checked carefully before pairing it with any other red dot model.
- The lower 1/3 co-witness height and centered bore alignment are part of the design, but the setup still depends on proper rifle cant when transitioning to the offset optic.
Suggested Comparisons
- Offset optic mounts
- Red dot sight mounting solutions
- AR15 Picatinny rail accessories
- Co-witness optic mounts
Suggested Accessories
- Picatinny rail mount
- Red dot sight
- Scope rings
- Optic cover
Frequently Asked Questions
What optic is this offset plate made for?
The product title specifies Holosun 407k and 507k. No other optic models are listed in the provided data.
Does this mount offer more than one offset position?
Yes. The description says it allows a 35 or 45 degree offset position without requiring additional components.
What is the difference between the 35 and 45 degree positions?
According to the description, the 35 degree position brings the red dot 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 the description say how this mount affects sight alignment 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.