Apex Optic Mount for Romeo 1 Pro to P320 RX Classic

Description

This Apex Optic Mount provides a direct solution for mounting a Romeo 1 Pro onto the slide of a Sig Sauer P320 RX (Classic) or any P320 slide cut for the original Romeo 1 footprint. Rather than relying on adapter plates that add height and bulk, this mount lets you run the Romeo 1 Pro low and secure — exactly where it needs to be for fast sight acquisition and reliable zero retention.

Machined from a single billet of steel with a black oxide finish, this mount is built to hold up under heavy round counts, holster wear, and the recoil impulse of full-power duty loads. The raised recoil lugs engage the optic body directly, locking it into position so that impact forces are transferred into the steel mount rather than the mounting screws alone. That means less chance of screws backing out and more consistent return to zero over the life of the pistol.

Key benefits for your setup:

• Direct fit for P320 RX Classic slides — designed specifically for slides factory-cut to accept the original Romeo 1 optic. No modifications or additional machining required.
• Secure Romeo 1 Pro mounting — adapts the larger Romeo 1 Pro footprint to the smaller Romeo 1 cut without introducing plate stack height or instability.
• Works with or without the steel shroud — retain the factory-provided protective shroud for hard use, or run without it for a lower profile and reduced weight.
• Co-witness capability — the rear notch built into the Romeo 1 Pro aligns with a .400” tall front sight (sold separately), allowing you to maintain iron sight backup without suppressor-height sights.
• Steel construction, black oxide finish — resists corrosion and abrasion while keeping a low-visibility matte appearance that blends with factory slide finishes.

Specs & fitment notes:

• Compatible with Sig Sauer P320 RX (Classic) slides cut for Romeo 1 direct mounting
• Also fits other P320 slides with the same factory Romeo 1 optic cut
• Accepts Sig Sauer Romeo 1 Pro optic only
• Requires .400” tall front sight for rear notch co-witness (not included)
• Material: billet steel with black oxide finish
• Installation: direct replacement for factory Romeo 1 mounting plate; uses existing slide screw holes

For shooters running a P320 RX who want to upgrade to the larger window and improved durability of the Romeo 1 Pro, this mount eliminates the guess