True Precision P365XL Slide with RMS Cut - Custom Fit for Sig Sauer

The True Precision P365XL slide with RMS cut is a precision-engineered replacement slide built for shooters running optics on a Sig Sauer P365 platform. This is a fully finished, stripped slide—no need to send yours in for work. It's machined from solid billet 17-4PH certified steel, heat-treated to spec, and manufactured entirely in the USA. The RMS optic cut accommodates a wide range of compact red-dot footprints, making it a smart choice if you're building or upgrading a P365XL, P365 X, P365, or MACRO lower receiver or fire control unit.

The design reflects serious shooter priorities: aggressive, scalloped front serrations for positive grip and a functional aesthetic, angled rear serrations for manipulating the slide, and clean side-window cuts that keep weight down without sacrificing structural integrity. A milled optic pocket keeps the top surface clean and ready for your choice of enclosed emitter. Available in four finishes—Satin Stainless, Black DLC, Stealth Grey PVD, and Gold TiN—so you can match your build or your preference. Every slide ships with an anodized black optic cover plate and mounting screws, so you're covered whether you're running glass immediately or going irons-only for now.

True Precision's RMS cut is compatible with Shield Arms (RMSc, RMS, RMSw, SMS), Holosun (EPS Carry, 507K, 407K), HEX Wasp, Sig (RomeoZero, RomeoZero Pro), Swampfox Sentinel 1x16, JP Enterprises Jpoint, and Vector Optics Frenzy-S 1x17x24 MIC. That covers most of the modern compact carry optics on the market, though other optics using the same footprint will work too. Whether you're building a duty-grade carry gun, a range tack-driver, or a modular parts gun, this slide delivers precision machining and proven fit without the downtime of a gunsmith.

Key Features

• Solid billet 17-4PH certified steel, heat-treated to specification
• 100% US manufactured and designed
• RMS optic cut footprint supports Shield Arms, Holosun, HEX, Sig, Swampfox, JP Enterprises, and Vector Optics compact dots
• Aggressive scalloped and reduced front serrations for positive grip
• Angled rear serrations for slide manipulation
• Side window cuts for weight reduction and clean aesthetics
• Milled optic pocket for enclosed-emitter red dots
• Available in Satin Stainless, Black DLC, Stealth Grey PVD, or Gold TiN finishes
• Includes anodized black optic cover plate and mounting screws

Specifications

Frequently Asked Questions

Which Sig Sauer P365 models does this slide fit?

The True Precision P365XL slide is compatible with P365XL, P365 X, P365, and MACRO lower receivers and fire control units. It will not fit the P365-380 variant. You can swap this slide onto any of those compatible lower/FCU combinations without issue.

What red dot optics are compatible with the RMS cut?

The RMS footprint accommodates Shield Arms (RMSc, RMS, RMSw, SMS), Holosun (EPS Carry, 507K, 407K), HEX Wasp, Sig (RomeoZero and RomeoZero Pro), Swampfox Sentinel 1x16, JP Enterprises Jpoint, and Vector Optics Frenzy-S 1x17x24 MIC. Other optics using the same RMS footprint will also work.

Does this slide come with a barrel, firing pin, and springs?

No, this is a stripped slide. It includes only the machined and finished slide itself, plus an optic cover plate and mounting screws. You'll need to source a barrel, internals, sights, and other components separately to complete your build.

Can I use this slide without an optic?

Yes. The slide includes an anodized black cover plate and mounting screws for use without an optic installed. You can run it irons-only, or add a red dot later when you're ready.