SIG SAUER P320-SXG Reserve 9mm Compensated Pistol

SIG SAUER P320-SXG Reserve 9mm Pistol

The SIG SAUER P320-SXG Reserve is a small-batch Custom Works pistol that combines the P320 fire-control system with an all-steel, full-size platform and a highly polished presentation finish. This 10-round configuration is identified by manufacturer part number 320SXGF-9-CW-RES-10 and UPC 798681729364. It is chambered in 9mm Luger and built for shooters who want the weight, balance, and refined appearance of a premium metal-framed P320.

SIG SAUER pairs a 3.9-inch stainless-steel barrel with a 5.9-inch high-polish DLC slide that incorporates an integrated compensator. That distinction explains why some distributor catalogs use a rounded “5-inch” description for the upper assembly even though the factory-listed barrel length is 3.9 inches. The compensator is designed to redirect gas to help reduce felt recoil and muzzle rise, supporting quicker sight recovery while preserving a clean, integrated profile.

The Reserve designation is more than a finish package. The steel frame, extended compensated slide, metal grip panels, sight system, and optics-ready configuration work together as a complete factory specification. Buyers comparing P320 variants should use the manufacturer part number and UPC above, rather than relying only on abbreviated distributor titles, to confirm this exact 10-round model.

Steel Construction and Reserve Finish

The defining feature of the SXG Reserve is its stainless-steel frame. Finished in high-polish DLC, the frame gives the pistol substantial mass and a distinctive dark luster. Matching high-polish GridLOK grip panels add texture and visual contrast while keeping the design cohesive. The complete pistol weighs approximately 46.2 ounces with a magazine, giving it a planted feel that is notably different from a polymer-frame P320.

The slide is also stainless steel beneath its high-polish DLC finish. Front and rear serrations provide useful handling surfaces, while the integrated compensator is machined into the extended slide assembly rather than added as a separate threaded muzzle device. Overall dimensions listed by SIG SAUER are approximately 8.2 inches long, 1.61 inches wide, and 5.5 inches high.

Optics-Ready Sight System

The P320-SXG Reserve arrives with XRAY3 day/night sights for a clear, conventional sight picture in varied lighting. The slide is also optic ready and uses SIG SAUER’s PRO optic footprint. No electro-optic is installed with this model, allowing the owner to select a compatible sight and appropriate mounting hardware. Always confirm optic and screw compatibility with the manufacturer before installation.

Controls and Capacity

This model uses a striker-fired action and a flat-faced trigger. It does not have an external manual safety, matching the protected product specification for this exact SKU. Familiar P320 controls and the modular fire-control unit preserve the operating layout of the broader P320 family, while the steel frame and compensated upper give the Reserve its own balance and character.

The restricted-capacity configuration includes three 10-round steel magazines for a listed capacity of 10+1. Magazine capacity restrictions vary by jurisdiction, so purchasers should confirm that this model is lawful in their location before ordering. As with any firearm, read the supplied owner’s manual, follow all safe-handling rules, and use only the correct ammunition and properly fitted accessories.

Key Features

• Caliber: 9mm Luger
• Action: Striker fired
• Barrel: 3.9-inch stainless steel
• Slide: 5.9-inch stainless steel, high-polish DLC, integrated compensator, optic ready
• Frame: Full-size stainless steel with high-polish DLC finish
• Grips: High-polish GridLOK panels
• Sights: XRAY3 day/night sights
• Optic interface: PRO footprint; optic not included
• Trigger: Flat faced
• Manual safety: No
• Capacity: 10+1
• Magazines included: Three 10-round steel magazines
• Overall size: Approximately 8.2 inches long, 1.61 inches wide, and 5.5 inches high
• Weight: Approximately 46.2 ounces with magazine
• Manufacturer part number: 320SXGF-9-CW-RES-10
• UPC: 798681729364

For collectors and enthusiasts drawn to an all-steel P320, the SXG Reserve brings together a polished Custom Works presentation, the stability of a substantial stainless-steel frame, an integrated compensator, and modern optics capability. This exact 10-round model retains the full-size Reserve configuration while meeting markets that require reduced-capacity magazines.