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Athena Precision Mossberg 500/590 Steel Red Dot Plate – Holosun K / EPS / 407K / 507K
Athena Precision
$69.99
PRODUCT OVERVIEW
At a Glance
FIT & COMPATIBILITY
What You Need to Know
Compatibility details selected by the Ready Gunner team.
PACKAGE DETAILS
Everything Included
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Athena Precision Mossberg 500 / 590 Steel Red Dot Adapter Plate – Holosun K Footprint
The Athena Precision steel red dot adapter plate is designed to mount compatible Holosun K-footprint optics to drilled and tapped Mossberg 500, 590, and Shockwave receivers.
Manufactured from hardened, heat-treated 4140 alloy steel, the plate uses a black copper phosphate coating for corrosion resistance and includes the mounting hardware identified in the supplied product information.
Compatible Mossberg Platforms
The supplied specifications identify compatibility with the following Mossberg platforms when equipped with a drilled and tapped receiver:
- Mossberg 500
- Mossberg 590
- Mossberg Shockwave
Due to receiver variations, screw length may require adjustment for some individual firearms.
Holosun K Footprint Compatibility
This adapter plate is designed around the Holosun K footprint and is listed as compatible with the following optics:
- Holosun EPS
- Holosun EPS Carry
- Holosun 407K
- Holosun 507K
- Holosun SCS Carry
- Vortex Defender CCW
- Vortex Defender Enclosed
- OSight S
Optics using the same supported footprint may also fit, but compatibility should be confirmed before installation.
Hardened 4140 Alloy Steel Construction
The plate is manufactured from hardened, heat-treated 4140 alloy steel. The supplied product information identifies steel construction as providing rigidity under recoil and repeated use.
Black Copper Phosphate Finish
A black copper phosphate coating is applied to help protect the steel plate from corrosion, moisture, and wear.
Drop-In Installation
The plate is designed as a drop-in mounting solution for compatible drilled and tapped receivers. No milling is identified as required in the supplied product information.
The plate includes the required mounting hardware, including 8-40 x 0.440 screws and custom M4 x 0.7 x 10mm screws.
Installation Hardware
Important: The supplied installation information notes that the M4 x 0.7 screws can begin threading into the 8-40 receiver holes and may cross-thread the receiver if the wrong screws are used.
Use the correct screws for each mounting location. Due to receiver variations, screw length may need to be adjusted before final installation.
Athena Precision Mossberg Red Dot Plate Specifications
| Manufacturer | Athena Precision |
| Product Type | Red Dot Adapter Plate |
| Firearm Compatibility | Mossberg 500, 590, Shockwave with Drilled and Tapped Receiver |
| Optic Footprint | Holosun K Footprint |
| Compatible Optics | Holosun EPS, EPS Carry, 407K, 507K, SCS Carry; Vortex Defender CCW / Enclosed; OSight S |
| Material | Hardened Heat-Treated 4140 Alloy Steel |
| Finish | Black Copper Phosphate Coating |
| Receiver Hardware | 8-40 x 0.440 |
| Optic Hardware | Custom M4 x 0.7 x 10mm |
| Installation | Drop-In; No Milling Required |
| Made In | Salt Lake City, Utah, USA |
What's Included
- 1 x Athena Precision Mossberg Steel Red Dot Adapter Plate
- 8-40 x 0.440 Mounting Hardware
- Custom M4 x 0.7 x 10mm Mounting Hardware
- Required mounting hardware identified for the supported installation
Installation note: Make sure the correct screws are used for the receiver and optic. The supplied product information warns that M4 x 0.7 screws may begin threading into the 8-40 receiver holes and can cross-thread them if used incorrectly.
Fitment note: Receiver dimensions may vary. Screw length may require minor adjustment for some individual firearms. The models listed above are the configurations identified as tested in the supplied product information.
Product identification: Athena Precision steel red dot adapter plate for drilled and tapped Mossberg 500, 590, and Shockwave receivers using supported Holosun K-footprint optics. Manufacturer part number and UPC were not provided.
