Mossberg 940 to Holosun 509T
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Mossberg 940 to Holosun 509T is backordered and will ship as soon as it is back in stock.
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Description
Description
Mossberg 940 Optics Adapter Plate for Holosun 509T
Optimize your Mossberg 940 shotgun with our adapter plate designed exclusively for mounting the Holosun 509T optic. Built for precision, our adapter plate ensures a seamless fit and flawless performance.
Specifications:
- Material: Manufactured from high-quality aluminum with all mounting hardware made from stainless steel.
- Finish: The plate is coated with a MIL-SPEC Type III Hard Anodized finish in black, providing superior durability and corrosion resistance.
Included Components:
- 1 Optic Plate
- 3 M4 X 6MM M3H FH Plate Mounting Screws
Note: This adapter plate is not compatible with the Holosun HE509-RD ACSS Vulcan model.
Compatibility:
- Compatible Firearms: Mossberg 940
- Compatible Optics: Holosun 509T
Designed for rugged reliability, our adapter plate is the most modular and widely used aftermarket optics adapter plate on the market, setting the standard for durability and compatibility.

There is no sales tax, unless you live in GA/IL/IN/MI/NJ/NC/OH/PA/VA/MD/NV/AZ/KY/UT/FL/MN/TN/WA/AR/CO/CA/PR/WV/MO
Free Shipping: All orders ship free via UPS Ground/USPS/FedEx which takes 1-5 business days. We also offer UPS 2nd Day air for $9.99.
Same Day Shipping:* UPS only accepts ground shipments on Weekdays. Therefore any UPS Ground order we receive will ship same day if ordered before 2PM EST on Weekdays only.
Hassle Free Returns: We have a 30 day return policy. If you want to return your item for whatever reason just contact us and we'll send you a pre-paid label just like Amazon.
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Payment & Security
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