Night Fision PLATE+NS RMR/507C SIG P320

The Night Fision PLATE+NS RMR/507C for SIG P320 is a purpose-built optic mounting system paired with iron sight backup—a straightforward solution for shooters who want a pistol-mounted red dot without sacrificing traditional aiming options. This combo pairs Night Fision's precision-machined optic plate with a lower-1/3 co-witness sight set, giving you a reliable all-conditions setup whether you're running a red dot at the range, in competition, or for defensive carry.

The optic plate itself is machined from 17-4 stainless steel and nitride-coated to resist corrosion and wear—the kind of durability you expect from a duty-grade pistol platform. It's engineered to fit Sig P320 models with the Sig Pro Cut and accepts popular optics like the Trijicon RMR and Holosun 507C. Thickness is a thin 0.2", so you're not adding unnecessary bulk to your slide.

Backup iron sights are the practical piece here. The tritium-lit front sight cuts through low light and transitional environments without needing batteries, while the blank rear sight—serrated to reduce glare—keeps your sight picture clean and intuitive when you need to shift from optic to irons. The lower-1/3 co-witness height lets both sights and red dot align naturally in your field of view. Installation hardware and a dedicated tool are included in the box.

Key Features

• Precision-machined 17-4 stainless steel optic plate with nitride coating for long-term durability
• Lower-1/3 co-witness backup sight configuration for natural sight picture alignment
• Tritium front sight for enhanced visibility in low-light and dark environments
• Blank rear sight with anti-glare serrations for simplified sight picture
• Compatible with Trijicon RMR, Holosun 507C, and other standard-mount pistol red dots
• Engineered for Sig P320 models with Sig Pro Cut
• Includes installation screws and mounting tool for straightforward setup

Specifications

Frequently Asked Questions

What red dot optics work with this Night Fision plate?

The Night Fision PLATE+NS is designed for the Trijicon RMR, Holosun 507C, and other optics that share compatible mounts. Night Fision provides a Pairing Guide to confirm your specific red dot will fit; check that resource before purchase to ensure compatibility with your optic choice.

Does this fit all Sig P320 variants?

This mount is engineered for Sig P320 models with the Sig Pro Cut and rear sight dovetail. Not all P320 variants include these features, so verify your pistol's slide cut before ordering.

What's the co-witness height, and why does it matter?

The backup sights are set at lower-1/3 co-witness (345-332 height), meaning they sit slightly below your red dot's optical axis. This height lets you use irons without them blocking your view through the optic, and the sight picture aligns naturally when you need to transition between aiming systems.

Does the tritium front sight require batteries or maintenance?

Tritium sights are self-illuminating and do not require batteries. They work passively in any light condition, including darkness and low-light environments, though tritium does fade over many years of service.