Sig Sauer P320 TXG Grip Module | 9mm | 8900036

The SIG Sauer P320 TXG Grip Module is a full-size, medium-profile grip module molded from tungsten-infused polymer to add mass while retaining the flex and ergonomics of polymer. It is intended to accept a complete P320 Fire Control Unit (FCU) and install into an X5 or full-size slide assembly to build a complete pistol. This module is finished in gray with a matte appearance and is sized for medium hands on full-size P320 frames. It is offered as the grip module only and does not include the FCU, slide, magazine, internal weight, or magwell unless explicitly listed.

Product Specifications

• The manufacturer is SIG Sauer.
• The model designation is P320 TXG Grip Module.
• The manufacturer’s part number is 8900036.
• The listed fit is for Sig P320 9mm configurations.
• The size is specified as Full Size.
• The grip profile is specified as Medium.
• The construction uses tungsten‑infused polymer for added mass with polymer characteristics.
• The frame material is listed as Polymer.
• The finish and color are Gray, Matte.
• This item requires a complete P320 Fire Control Unit and an X5 or full-size slide assembly to function as a pistol component.
• This listing does not include internal weight or a magazine well unless specifically noted elsewhere.
• Magazine compatibility: X‑Series grip modules are compatible with new style magazines showing the circular SIG logo and square locking tab; older basepads may require modification or updated parts.
• The product type is Grip Module and the subcategory is Grips.
• The gun type classification is Pistol.
• The UPC is 798681619054.

Designed for shooters assembling or upgrading a P320 platform, the TXG module offers increased perceived mass for reduced muzzle rise while maintaining polymer ergonomics. Its medium profile on a full-size frame suits a range of users and is particularly applicable to competition-style builds and precision range work where a heavier grip module can improve balance and felt recoil characteristics. The gray, matte finish provides a neutral, durable appearance and integrates with X‑Series components.