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A Look at Sig's NEW P320 3.9" Raze Custom Works Slide

A Look at Sig's NEW P320 3.9" Raze Custom Works Slide

If you’re hoping to build, upgrade, or replace your Sig P320 slide, you’re in luck. Sig Sauer recently announced the latest addition to their customization options for the P320: the 3.9” Raze Custom Works Slide Assembly.

The brand’s latest slide assembly offering is coated with a durable Nitron finish, is fitted with XRAY3 Day/Night Suppressor height sights, and comes optics ready. It also features a removable flush-fit optics plate with top accessible screws, making it easier to mount optics to this popular pistol.

Let’s take a look at the details of this new custom slide.


The 3.9" Raze Custom Works Slide is designed to fit the P320 compact (non-X-Series), full size, and carry (X-Series and non-X-Series) grip modules. It can be used with any of Sig’s standard 9mm, 3.9” non-threaded barrels or a 4.6” threaded barrel.

It is important to note that the new slide assembly is only compatible with 9mm barrels and will not work with the .40, .357, or .45 variations. Fortunately, Sig has noted that adding the new slide to your firearm will not void its warranty.


Optic Ready: The new 3.9" Raze Custom Works Slide is designed to be optics ready and is compatible with the ROMEO1-PRO, ROMEO2, Delta Point Pro, and RMR footprint (which requires a sealing plate).

Sights: The new slide assembly comes standard with Sig’s XRAY3 day and night suppressor height sights, a 3-dot tritium system designed to provide illumination in low-light conditions.

Material and Finish: The 3.9” Raze Custom Works Slide is made from stainless steel and is coated with a durable scratch and corrosion-resistant Nitron finish.

Optics Plate: Sig’s new slide assembly is complete with a removable flush-fit optics plate. It is designed with top accessible screws, which makes removing the optics cover plate easy, so you can mount new optics without much difficulty.

Sig P320 Slide


Optics ReadyYes
SightsX-RAY3 Day/Night Suppressor Height Sights
Slide FinishNitron
Slide Material Stainless Steel
Caliber9mm Luger
Loaded Chamber IndicatorNo

About the Sig P320

The Sig P320 comes in multiple sizes, including full-size, compact, carry, and sub-compact, among others. The new Custom Works Slide Assembly is designed to fit the P320 compact (non-X-Series) and the full-size (X-Series and non-X-Series) grip modules.

The P320 compact has a 3.9” non-threaded barrel and a 7.2” long, 1.3” wide, 5.3” tall frame.

This striker-fired pistol has a stainless steel frame and a black modular polymer grip. Chambered in 9mm Luger, the P320 compact comes standard with a 15-round magazine and is also available in a state-compliant 10-round capacity.

The P320 is a popular choice for home defense, target practice, and concealed carry thanks to its smooth trigger pull, accuracy, and compact frame.

To check out our Kydex and hybrid holster options for the Sig P320, click here.

Sig Sauer P320 Slide only


If you’re looking for the latest customization option for the popular Sig Sauer P320, the brand new 3.9" Raze Custom Works Slide might be for you.

The updated slide assembly is built with stainless steel and a durable Nitron coating, comes optics ready, and is built with Sig’s XRAY3 Day/Night Suppressor height sights. But perhaps the most notable feature is the slide’s removable flush-fit optics plate, which simplifies the process of mounting optics.

If you’re looking for belts or a Sig P320 holster, we recommend visiting our Holsters by Gun Model page for holsters that are custom-made for your weapon of choice. For all of our belt and holster options and for more information to help you choose the carry system that works best for you, visit our Vedder Holsters website.

Looking for items beyond holsters and belts, check out our Resources Page for popular product links like lights, lasers, first aid, maintenance, and more.

Mikayla Blair

After launching her career as an award-winning journalist in the American Southwest, Mikayla Blair joined the Vedder Holsters team as a content writer in 2021. She writes about all things guns, holsters, and concealed carry, and is especially passionate about women's self-defense.

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