Steel Adapter Plate for Mossberg 500 & Holosun 509T
PRODUCT OVERVIEW
This steel adapter plate enables the seamless mounting of a Holosun 509T red dot sight or any optic with the 509T footprint to your Mossberg 500 Shotgun. Athena Precision offers unmatched rigidity and precision under recoil and heavy real world use. Finished with a corrosion-resistant copper phosphate coating and shipped with all necessary screws and hardware, this drop-in solution requires no milling. We take immense pride in the aesthetics and quality of the parts we produce. Every product is engineered, manufactured, finished, and shipped from our shop in Salt Lake City, Utah.
Ideal for duty, competitive shooting, and hunting applications.
QUICK SPECS
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Feature
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Specification
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Compatibility
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Mossberg 500, 590, Shockwave with a drilled and tapped receiver
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Optic Footprint
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Holosun 509T
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Material
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Hardened Heat Treated 4140 Alloy Steel
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Finish
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Black Copper Phosphate Coating
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Hardware Included
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8-40 x 0.440 (All mounting hardware needed comes with the order.)
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Thickness
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--- (Measurement from the bottom of the plate to the mounting face of the optic not the overall thickness.)
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Made In
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Salt Lake City, UT, USA
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**Due to receiver variations, you may need to modify the length of screws with a file or a grinder.**
**May fit other models, listed is what we've tested.**
KEY FEATURES
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Premium Steel Construction - Delivers superior strength over aluminum, resisting any movement, flex and fatigue under high recoil.
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Perfect Fitment - Reverse-engineered for exact match with OEM factory slides. No wobble, no play.
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True Drop-In - No gunsmithing or milling required. Designed for hassle-free installs.
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Surface Protection - Durable phosphate coating guards against corrosion, moisture, and wear.
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Duty-Proven Performance - Trusted by law enforcement, competitors, and serious gun owners.
INSTALLATION GUIDE
FREQUENTLY ASKED QUESTIONS
Q: Will this fit all Mossberg 500s?
A: Yes. It is fully compatible with the Mossberg 500. 590, and shockwave. Due to receiver variations, you may need to modify the length of screws with a file or a grinder.
Q: Will this work for hunting?
A: Yes. This is a great option to mount an optic to your shotgun for hunting.
Q: Will it hold zero through thousands of rounds?
A: Yes – these plates hold zero with options for 3 or 4 screw mounting for optimal stability.
Q: Is this plate compatible with Holosun 407K/507K?
A: This version is for the 509T. Please refer to our 407K/507K compatible red dot plate.
Q: Is milling or custom fitting required?
A: Not at all. This is a plug-and-play solution designed for DIY installation.
CUSTOMER REVIEWS
"Great, high quality, USA made product! Works on Mossberg 835 (and probably 935) perfectly. The best turkey and coyote hunting setup I have found. Keeps the sight profile very low. The only small negative is having to cut down the mounting screws a little bit." -S.S.
PERFORMANCE APPLICATIONS
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Hunting- Slim profile with strong retention.
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Duty & Tactical - Reinforced performance under high-stress use.
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Competition - Maintains zero during dynamic courses.
RESOURCES
ORDER DETAILS
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Price: $75.00
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Availability: In Stock - Ships in 1-3 Business Days
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Warranty: Lifetime Replacement Guarantee. We will happily return/replace any defective parts if you ever have any issues!
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Support: Contact | athenaprecisioncnc@gmail.com | (801) 973-0800
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