SIG Sauer’s TXG grip module (SIG part no. 8900036) uses a patent-pending process to infuse tungsten into the polymer, giving this medium-size P320 X-Series module the weight of steel with the flex of polymer. Installing your existing P320 fire control unit into the TXG adds mass low in the grip, which helps tame muzzle flip and delivers one of the flattest, softest-shooting configurations in the P320 lineup. It’s built for 9mm full-size P320s with a 4.70-inch barrel, and it’s a direct way to improve recoil management without changing your fire control unit.

Key Specifications

• Manufacturer: Sig Sauer, maker of the modular P320 platform.
• Configuration is the X-Series TXG, SIG’s tungsten-infused weighted grip module.
• Size is Medium, built for the full-size P320 with a 4.70-inch barrel.
• Material is tungsten-infused polymer, adding steel-like weight while keeping polymer flex.
• Chambered for 9mm Luger, matched to full-size P320 slide and barrel assemblies.
• Does not include the extended magwell or internal weight, sold separately.

Frequently Asked Questions

Does this module include the fire control unit? No, you transfer your existing P320 fire control unit into the TXG module.

What magazines work with this module? Only newer-style magazines with the circular SIG SAUER logo and square locking tab on the base pad fit without modification.

What does the tungsten infusion do? It adds the weight of steel to the polymer module, helping flatten recoil and reduce muzzle rise.

Buy the SIG Sauer P320 X-Series TXG Grip Module

For P320 shooters chasing a flatter-shooting, softer-recoiling setup, this tungsten-infused module from Sig Sauer delivers real, measurable weight where it counts. It’s one of several handgun frame options built for the modular P320 platform. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.