The Sig Sauer P320 X5 TXG is a complete caliber X-Change kit built for shooters who demand a softer-shooting, more controllable 9mm platform. If you're running a P320 and want to upgrade to a dedicated competition or duty-grade setup without buying an entirely new pistol, this kit swaps into your existing frame and transforms your gun's ergonomics, recoil management, and sight picture.
The standout innovation here is the TXG grip module—a tungsten-infused polymer that combines the mass of steel with the flex of a modern polymer grip. That added weight directly translates to less muzzle rise when you're pushing rounds downrange. The recoil package matches the heavier grip: you get a solid steel guide rod paired with a 14-pound 1911-style recoil spring, plus a second 12-pound spring so you can dial in the feel for your ammo or preference. The 5-inch stainless steel barrel delivers the accuracy and velocity that makes distance shooting and competition practical. Fiber optic adjustable sights from Dawson Precision are already mounted, so you're ready to shoot out of the box—and the ROMEO1PRO optic-ready slide means adding a red dot is one option away. Both the magwell and grip weight are removable, so you can lighten or customize the kit to your preferences or match your duty setup.
Two 17-round magazines come included, giving you capacity and flexibility for range days, competitions, or transition training. Just note: this X-Change kit is built for 9mm. If your P320 frame is chambered in .45 ACP or 10mm, this kit isn't the right fit.
| Brand | Sig Sauer |
| Product Type | Caliber X-Change Kit |
| Caliber | 9mm |
| Barrel Length | 5 inches |
| Barrel Material | Stainless Steel |
| Grip Module | TXG Tungsten-Infused Polymer |
| Sights | Dawson Precision Fiber Optic Adjustable |
| Slide | ROMEO1PRO Optic-Ready |
| Recoil Springs | 14-pound and 12-pound |
| Guide Rod | Solid Steel |
| Magazines Included | Two 17-round |
| Compatibility | P320 9mm frames only—not for .45 ACP or 10mm frames |
Yes, if your P320 frame is chambered in 9mm. This kit is not compatible with P320 pistols chambered in .45 ACP or 10mm. The X-Change system lets you swap this complete slide and grip assembly into your existing frame.
Yes. The slide is ROMEO1PRO optic-ready, so you can mount a compatible red dot. The Dawson Precision fiber optic sights that come with the kit will coexist with a mounted optic or serve as a backup.
You get the complete X-Change kit with the TXG grip module, 5-inch barrel, ROMEO1PRO slide, Dawson Precision sights, both recoil springs, steel guide rod, removable magwell, and two 17-round magazines.
Yes. The kit includes both a 14-pound and 12-pound spring, giving you the option to tune the recoil feel to your load or preference. The solid steel guide rod and spring system are designed to handle either spring weight.
Sig Sauer
