P320-XFIVE DH3

Description

The SIG P320-XFIVE DH3 is a competition-ready pistol built for shooters who want a flat-shooting, high-capacity platform right out of the box. It takes the proven P320 FCU and wraps it in a purpose-built grip and slide designed to eat through stages with minimal muzzle rise. The integrated magwell and optics-ready system mean you can go from the case to the firing line with zero gunsmithing required.

Key Features

• Optic-Ready Slide: Comes milled from the factory for a ROMEO1PRO footprint, and includes a removable rear sight plate. I’ve seen firsthand how much time this saves versus sending a slide out for machining.
• Competition Grip Module: The TXG tungsten-infused polymer grip has significant weight to dampen recoil and aggressive texturing that locks into your hand. After decades of testing grips, this one gets the balance of weight and control right.
• 5″ Bull Barrel & Slide: The extended sight radius and heavier bull barrel profile help manage recoil impulse for faster follow-up shots. It’s a noticeable difference from a standard 4.7″ carry barrel.
• Integrated Flared Magwell: Makes reloads faster and more consistent under pressure—a must for competitive use. It’s molded as part of the grip, so there’s no add-on piece to come loose.
• High-Capacity Magazines: Ships with three 21-round magazines, giving you plenty of rounds for most USPSA or Steel Challenge stages without an immediate reload.

Specifications

Caliber	9mm
Barrel Length	5 in
Overall Length	8.5 in
Weight (Unloaded)	45.5 oz
Frame Material	Tungsten-Infused Polymer
Slide Material	Stainless Steel
Sights	Suppressor Height X-RAY3 Day/Night, Optics Ready
Magazine Capacity	21+1 Rounds (3 included)

Honest Assessment

Pros: The weight distribution from the TXG grip is excellent, making this one of the flattest-shooting polymer pistols I’ve run. The package is incredibly complete—you get the optic cut, magwell, and three high-capacity mags, which is real value. The build quality is solid; I’ve run thousands of rounds through similar X-Series guns in my shop with minimal issues.

Cons: At over 45 ounces unloaded, this is a heavy pistol. It’s a dedicated range or competition tool, not something you’ll want to carry all day. The aggressive grip texture is fantastic for control but can be harsh on bare skin during long practice sessions.

Who Should Buy This

This is built for the action shooter. If you’re getting into USPSA Limited Optics or Carry Optics divisions and want a platform that’s competitive immediately, the DH3 is a turnkey solution. It’s also a superb choice for a dedicated home defense pistol where magazine capacity and shootability are top priorities. Serious recreational shooters who appreciate a soft-shooting, accurate pistol for the range will get their money’s worth.

Frequently Asked Questions

What optics fit the factory cut?

The slide is milled specifically for the SIG ROMEO1PRO footprint. Plates are available from several manufacturers to adapt to other popular optics like the Trijicon RMR or Holosun 507C.

Is this pistol California compliant?

No, it is not. The combination of the threaded barrel (in some configurations), magazine capacity over 10 rounds, and other features typically make this model unavailable for sale in California.

Can I change the grip module?

Yes. The P320’s modular design means you can swap the TXG competition module for any other P320 grip. Just know you’ll lose the integrated magwell and the significant tungsten weight if you go to a standard polymer frame.

How does it compare to the Legion version?

The DH3 is very similar to the P320 X-Five Legion. The key difference is the DH3 uses a stainless steel slide instead of a Legion’s coated steel slide, and the DH3 includes an optics cut from the factory. The performance and feel are virtually identical.