The SIG Sauer P320 X-Series TXG grip module (SIG part no. 8900039) uses a patent-pending tungsten-infused polymer process to give shooters the weight and balance of a steel frame without actually machining one. Built for the full-size P320 chambered in 9mm Luger, this Medium-size module has a flared magazine well for faster reloads and is designed as an assembly that accepts your existing P320 fire control unit, making it a straightforward way to change the feel of a P320 build.

Key Specifications

• Manufactured by SIG Sauer, the original maker of the P320 platform.
• Sized for the full-size SIG P320 grip frame.
• Grip module itself is caliber-agnostic and pairs with 9mm, .40 S&W, or .357 SIG fire control units, since chambering is set by the barrel and slide.
• Uses a tungsten-infused heavy polymer for the weight and feel of a steel frame.
• Sized as a Medium grip module.
• Features a flared magazine well for faster reloads.
• Sold as an Assembly that accepts your existing P320 fire control unit.
• Classified under SIG’s Grip Module product line.
• Compatible with SIG’s modular P320 fire-control-unit system for a direct swap.

Frequently Asked Questions

What makes the TXG different from a standard polymer module? It uses a tungsten-infused polymer that adds the weight of a steel frame.

What P320 size does this fit? The full-size P320 at a 4.70-inch barrel length.

Does this include a fire control unit? No, it’s built to accept your existing P320 fire control unit.

Buy the SIG Sauer P320 X-Series TXG Grip Module, Medium

Add steel-frame heft to your P320 build from our handgun frames selection, ordered from our Lubbock, Texas gun shop for fast, reliable shipping to your door or FFL.