Optics ready plates for Sig P320 models with Pro Cut

The Sig Sauer P320 Pro Series models use a specific Pro Cut optics-ready slide with a Romeo1Pro / DeltaPoint Pro (R2-type) footprint and a separate rear sight dovetail. When you remove the cover plate, the rear sight stays in place – ideal if you want a low red dot plus a clean backup sight picture.

This category gathers optics ready plates made specifically for Sig P320 slides with Pro Cut. If your slide is marked as “Pro Cut”, “XFULL PRO”, “XCARRY PRO” or similar, and the rear sight sits behind the optics window in its own dovetail, this is the right place to look.

Pro Cut vs Pro Cut with RMR holes

You may see different marketing names such as “Pro Cut” and “Pro Cut with RMR holes”. The important thing for adapter plates is that both still use the original R2 / DPP-style slide cut – the extra RMR screw holes are only there for people who choose to risk a direct-mount RMR.

• All adapter plates in this family attach to the factory R2 / DPP cut and use steel pins and plate borders to manage recoil, not just the optic screws.
• If you want plates designed exactly for the “Pro Cut with RMR holes” marketing variant, you can also check this dedicated collection: Optics Ready plates for Sig P320 with Pro Cut and RMR holes.

What if your rear sight is in the cover plate?

Some P320 optics-ready slides (for example many M17/M18, Legion and RXP-style models) use a cover plate that includes the rear sight. When you remove that plate, you also lose the rear sight and you’ll usually want an adapter with an integrated rear sight or new rear dovetail.

If your P320 loses the rear sight when you take off the optics cover, please use this category instead: Optics ready plates for Sig P320 models with removable rear sight.

Plates and footprints available for Pro Cut slides

For Sig P320 Pro Cut slides you’ll find plates for many popular red dot footprints (model-dependent), such as:

• Trijicon RMR / SRO
• Leupold DeltaPoint Pro / Romeo1Pro-type optics
• Shield RMSc
• Holosun K-Series
• Noblex / Vortex Venom style
• Aimpoint Acro
• C-More RTS and similar competition dots

Always check each product description for the exact combination of slide length + Pro Cut style + optic footprint it supports (for example: XFULL PRO, XCARRY PRO, XCOMPACT PRO, etc.).

Why use a dedicated Pro Cut plate?

Each plate in this category is CNC-machined specifically for Sig P320 Pro Cut slides. You’ll find options that:

• Keep the optic as low as possible over the bore for a natural, fast sight picture.
• Retain or co-witness with the existing rear sight on Pro Cut slides.
• Offer competition-focused windows that maximise dot visibility and speed.

This allows you to tune your P320 Pro Cut for carry, duty or competition while maintaining a solid mount and reliable zero.

Need plates for other P320 or Sig models?

If your P320 is not optics-ready from the factory, you can still mount a red dot with dovetail or dedicated mounting solutions – see our red dot mounts for non-OR Sig P320 pistols.

For other Sig pistols, browse our full range of optic adapter plates for Sig Sauer models.

Not sure if your slide is Pro Cut?

If you’re unsure whether your slide is Pro Cut or which plate matches your optic, just contact us. Send us your exact P320 model designation and, ideally, a photo of the slide cut from above and from the side – we’ll help you choose the correct adapter plate.