Description
If you've got a full-size P320, this TXG grip module lets you completely change how your gun feels and shoots. Sig Sauer engineered this using tungsten-infused polymer molded into a single module. The result is something that weighs like steel but still gives you the responsiveness and flex of polymer, which matters more than you'd think. The added heft translates to real-world benefits on the range: noticeably less muzzle flip, softer recoil impulse, and improved control on follow-up shots.
TXG Large Gray Module Compatibility
This module is sized Large, meaning it gives you the fullest grip profile for full-size P320s. You'll need a complete P320 Fire Control Unit and either a full-size 4.7 inch slide or X5 slide assembly to use it. The module does not include the extended magwell or internal tungsten weight, but it's fully compatible with them if you want to add that extra mass later. Just remember that if you go with the magwell and weight, you'll want to use the newer style magazines with the circular SIG SAUER logo and square locking tabs on the basepad.
Weight and Feel of the P320 TXG
Out of the box the grip module weighs 13.3 ounces. Add the optional magwell and internal weight, and you're at 16.6 ounces total. That extra weight changes everything about how the gun shoots, especially if you're spending time at the range or running competition courses. Competitors using the P320 have reported faster follow-ups and significantly better control, mainly because the heavier grip soaks up recoil energy.
What Comes with This Gray Grip Module
You get the grip module itself in gray. Installation is straightforward, just requires removing your takedown lever and swapping out the old module. Everything installs with minimal tools needed.
Key Specifications
- Model: P320 X-Series TXG
- Fits: P320 Full Size (4.7 inch) and X5 slide assemblies
- Grip Size: Large
- Caliber Compatibility: 9mm Luger, .40 S&W, .357 SIG
- Material: Tungsten-infused polymer (patent-pending process)
- Grip Module Weight: 13.3 ounces
- Total Weight with Magwell and Weight: 16.6 ounces
- Color: Gray
- Finish: Matte gray polymer
- Manufacturer Part Number (MPN): 8900274
- UPC: 798681632244
- Compatible with X-Series Magwell: Yes (not included)
- Magazine Type Required: New style with circular SIG SAUER logo
What’s Included
- P320 TXG full-size large grip module in gray
Frequently Asked Questions
Do I need anything else to use this P320 TXG grip module?
Yes, you'll need a complete P320 Fire Control Unit (FCU) and either a full-size 4.7 inch slide or X5 slide assembly. The grip module alone is just the frame portion. Drop your existing FCU into this module, pair it with a compatible slide, and you're good to go.
What's the difference between the Large and other grip sizes in the P320 TXG?
Large is the biggest option available for the TXG module, giving you the fullest grip circumference. It's best for users with larger hands or those who prefer a fuller profile. Medium and small options are also available if you want a less aggressive grip. All the TXG modules use the same tungsten-infused construction regardless of size.
Can I add the magwell and internal weight that I see in pictures?
The magwell and internal tungsten weight are sold separately and are fully compatible with this module. Adding them increases total weight from 13.3 ounces to 16.6 ounces, which is why they're popular for competition shooting. Just be aware that with the magwell installed, you'll need newer style magazines that have the circular SIG SAUER logo and square locking tabs.
Is this module difficult to install?
Installation is simple and requires minimal tools. You remove the takedown lever, swap out your old grip module, and reinstall the lever with your new TXG module. Most users report it takes just a few minutes. A workbench or flat surface is helpful to keep small parts organized during the swap.



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