This adapter plate is compatible with the Sig Sauer P320 optics ready slide and the Holosun 509T footprint.
Upgrade Your SIG P320 with a Hardened Steel Adapter Plate to Mount the Holosun 509T.
You need a mount as tough as your firearm—no shifting, no loosening, just rock-solid performance. Our Sig P320 to Holosun 509T Steel Adapter Plate is precision-machined from hardened steel to give you the strongest, most reliable optic mounting solution available. Whether you carry daily, compete, or train like your life depends on it, your optic shouldn’t shift or come loose. This isn't a generic plate. It’s precision-machined from hardened steel to give you the durability and exact fit your setup demands. Every product is engineered, manufactured, finished, and shipped from our shop in Salt Lake City, Utah.
Install Instructions
Fits:
-Sig Sauer P320
-Holosun 509T
**May fit other models, listed is what we've tested.**
Specifications:
Material: Precision machined, heat-treated 4140 alloy steel.
Finish: Coated with a copper phosphate to aid in corrosion resistance.
Hardware: (included) Custom made screws. All mounting hardware needed comes with the order.
This precision-machined adapter plate guarantees a rock-solid connection, eliminating movement and keeping your optic zeroed shot after shot.
Why This Mount Works—Every Time
🔩 Hardened Steel Construction
Forget aluminum. This plate is made from heat-treated alloy steel and finished with a black oxide coating for maximum strength, corrosion resistance, and a clean, tactical look.
🎯 Holds Zero Under Recoil
CNC-machined to exact tolerances, this adapter plate keeps your Holosun 509T locked in and zeroed—no matter how many rounds you run or how rough things get.
🛠️ Drop-In Fit for P320
Compatible with all SIG P320 models using the DeltaPoint Pro optic footprint. No mods, no headaches—just a direct bolt-on solution that works.
🇺🇸 Made in the USA
Designed and built in Salt Lake City, Utah by real shooters who care about doing it right. No imported shortcuts. Just serious quality you can count on.
Why Athena Precision?
Expert Engineering – Precision-machined for flawless optic fitment.
Hardened Steel Construction – Stronger & more durable mounts.
Made in the USA – Crafted & tested in Salt Lake City, Utah.
Trusted by Professionals – Used by competitors, law enforcement, and serious shooters.
We don’t cut corners. We build gear that you can trust.
Get Locked In—Order Yours Today!
Your optic is only as reliable as what it's mounted on. With Athena Precision’s steel adapter plate, you get a rugged, reliable mounting solution that’s trusted by law enforcement, competitive shooters, and serious EDC users across the country.
💥 Click "Add to Cart" now and lock in precision you can trust! 💥
