Optics ready plates for Sig P320-XTEN [ENDURE & COMP]

The Sig Sauer P320-XTEN family (XTEN, XTEN ENDURE and XTEN COMP) brings 10mm Auto into the P320 X-Series platform: optics-ready slides, X-RAY3 Day/Night sights and a grip module built to manage heavy recoil. On such a powerful pistol, choosing the right adapter plate for your red dot is crucial for reliability and long service life.

This category gathers optics ready plates made specifically for Sig P320-XTEN ENDURE & P320-XTEN COMP slides. All of them are designed around the factory PRO / Deltapoint Pro-style cut used on XTEN models, including slides that also have extra RMR / Holosun screw holes.

Understand your P320-XTEN optics cut

All P320-XTEN ENDURE & COMP pistols come with an optics-ready slide that uses Sig’s PRO footprint, based on the Leupold DeltaPoint Pro / Romeo1Pro pattern. The rear sight sits in its own dovetail behind the optics window, so it stays in place when you remove the cover plate.

• Standard PRO / DPP cut: The plate indexes in the factory PRO footprint and provides a new mounting pattern for your chosen red dot.
• Slides with additional RMR / Holosun holes: Some XTEN slides are also drilled and tapped for the RMR / Holosun pattern. Our plates still attach via the PRO / DPP interface and use the extra holes only where appropriate, giving you more support than “screws-only” direct mounting on a hard-recoiling 10mm.

If a plate description mentions both PRO / DPP and RMR holes, it simply means it is optimized for XTEN-style slides that offer this hybrid pattern – you still attach the adapter to the original PRO cut.

Footprints supported for P320-XTEN

Depending on the specific plate, you’ll find adapters that convert the XTEN PRO / DPP cut to many popular footprints, including:

• Trijicon RMR / SRO
• Romeo2 / Romeo-X Pro / DeltaPoint Pro-type optics
• Shield RMSc
• Holosun K-Series
• Noblex / Vortex Venom
• Aimpoint Acro
• C-More RTS

Always read the individual product description to confirm the exact combination of P320-XTEN slide + optic footprint the plate is designed for.

Why use an adapter plate on a 10mm XTEN?

With 10mm Auto recoil, a high-quality adapter plate is more than just a way to change footprints:

• Better engagement surfaces: Plates are machined to cradle the optic housing and spread recoil forces across the plate, not only into two screws.
• Improved durability: Correctly matched plates reduce the risk of screw shear and zero shift over time.
• Height & sight picture tuning: Some plates keep the optic as low as possible for faster indexing, others are optimized for suppressor-height or co-witness setups.

This lets you configure your XTEN ENDURE or XTEN COMP for backcountry carry, duty use or competition while keeping a secure mount and repeatable zero.

Iron sights & backup options

If you want a traditional sight picture or a backup to your red dot, check our iron sights for Sig P320 optics-ready models. Many of these sets work as co-witness or suppressor-height backups for PRO-cut slides – always verify XTEN compatibility in the product description or contact us.

Need plates for other Sig models?

Looking for optics plates for different Sig pistols, or for non-OR P320 variants? Explore our red dot mounts for non-OR Sig P320 pistols and the full range of optic adapter plates for Sig Sauer models.

Not sure which plate fits?

If you’re unsure which XTEN variant you have or which plate matches your optic, just contact us. Send us the exact model name (P320-XTEN ENDURE or P320-XTEN COMP) and a clear photo of the slide cut, and we’ll help you pick the right adapter for your setup.