Night Fision Precision Optic Mounting Plate: 507c/RMR to Sig P320

The Night Fision Precision Optic Mounting Plate for 507c/RMR to Sig P320 is a purpose-built adapter that lets you mount popular red dot sights—including the Holosun 507c and Trijicon RMR—directly to your P320 slide. If you're running a modern duty or competition pistol and want the speed and accuracy of a quality optic, this plate bridges the gap between your slide's cut and your favorite dot.

Built from 17-4 stainless steel and finished with a nitride coating, this mounting plate is engineered to handle repeated recoil cycles and maintain zero under hard use. Night Fision machines these to tight tolerances so you get a secure fit that won't shift. The plate itself is 0.2" thick—substantial enough to support your optic reliably while keeping the assembly compact.

Installation is straightforward. The package includes a dedicated Night Fision Optic Tool with a T10 Torx head for mounting hardware and a flat-head slot for windage and elevation adjustments on compatible sights. Extra screws come in the box so you have spares, and the tool features a lanyard hole if you want to tether it to your belt or range bag. It's a small detail, but it beats fumbling for the right driver when you're at the line or in the field.

Night Fision backs this plate with a Limited Lifetime Warranty, so you're covered if something goes wrong.

Key Features

• Mounts Holosun 507c, 407c, and Trijicon RMR optics to Sig P320 slides with compatible cuts
• Machined from 17-4 stainless steel for strength and durability
• Nitride coating resists wear and corrosion
• Includes Night Fision Optic Tool with T10 Torx and flat-head drivers
• Extra mounting hardware supplied in the box
• Tight tolerances ensure a secure, repeatable fit
• Limited Lifetime Warranty included

Specifications

Frequently Asked Questions

Will this plate work with my Holosun 507c or Trijicon RMR?

Yes. The Night Fision plate is designed to mount either the Holosun 507c (and 407c variants) or the Trijicon RMR to your P320 slide. Both optics share a compatible footprint with this mounting plate.

What do I get in the box?

You receive the precision mounting plate itself, the Night Fision Optic Tool (which has a T10 Torx driver and a flat-head slot), and extra mounting screws for your build or spares.

Is this compatible with all Sig P320 models?

This plate is designed for Sig Sauer P320 models with the Sig Pro Cut. Check your slide to confirm the cut pattern matches before ordering.

What makes 17-4 stainless steel a good choice for an optic mount?

17-4 stainless steel offers excellent strength-to-weight ratio and corrosion resistance. Combined with the nitride coating, it stands up to harsh use, recoil stress, and environmental exposure while maintaining the tight tolerances needed for a repeatable zero.