The C&H Precision Sig P320 X-Five to Holosun 509T optic mount plate (part no. SGX-509T-ST) lets a Sig P320 X-Five pistol accept a red dot built to the Holosun 509T mounting footprint. C&H Precision designs, machines, and ships every plate from its family-owned business in Coastal Georgia, cutting each one on HAAS CNC machines to tight tolerances so the optic sits low and square with no wobble. It is a straightforward, direct-fit upgrade for shooters running this pistol for concealed carry, duty, or competition who want a specific red dot footprint without sending the slide out for custom milling.

Key Specifications

• The plate is machined to fit a factory Sig P320 X-Five slide without any additional gunsmithing.
• It accepts red dots built to the Holosun 509T mounting footprint.
• Each plate is CNC-machined on HAAS machining centers to tight tolerances for a consistent, repeatable fit.
• Every plate passes multiple quality checks before it ships to the customer.
• Plates are designed and produced at C&H Precision’s family-owned Coastal Georgia facility.
• Mounting uses a patented stainless steel T-Nut system with six to seven threads of engagement per screw.
• All mounting hardware is fully replaceable, so damaged screws or T-Nuts don’t require replacing the whole plate.

Frequently Asked Questions

Will this plate fit my Sig P320 X-Five pistol? Yes. It is machined specifically for the Sig P320 X-Five slide’s factory optics cut, no fitting or gunsmithing required.

What red dot sights will this accept? Any optic built to the Holosun 509T mounting footprint bolts directly to this plate.

Is the mounting hardware replaceable? Yes. The T-Nut hardware system is fully replaceable, so worn or damaged screws can be swapped without buying a new plate.

Buy the C&H Precision Sig P320 X-Five to Holosun 509T Mount Plate

Get a proper direct-fit red dot mount for your Sig P320 X-Five pistol. Order this C&H Precision plate from our Lubbock, Texas gun shop and check out the rest of our red dot mounts selection while you’re at it. Direct shipping, no FFL required.