Sig Sauer P320 X-Series TXG Large Grip Module 9mm Luger/40 S&W/357 Sig Gray

The Sig Sauer P320 X-Series TXG Large Grip Module is a heavy, tungsten-infused polymer grip housing designed to drop into Sig Sauer's fully modular P320 platform. Built around a patent-pending process that infuses tungsten directly into the polymer blend before molding, the TXG module adds substantial weight compared to a standard P320 grip, helping to tame recoil and muzzle flip while keeping the pistol's familiar footprint. This large (full-size) module is finished in gray and is sized for the full-size 4.7-inch P320 slide.

The TXG grip module is compatible with P320 fire control units (FCUs) chambered in 9mm Luger, .40 S&W, or .357 SIG, so a single module works across the P320's supported centerfire pistol calibers. The X-Series TXG is magwell and X-Series weight compatible, accepting standard P320 magazines and ready for Sig's accessory magwell and weight kits. As with all P320 grip modules, the FCU and slide are sold separately.

Installation follows the standard P320 grip module swap: field-strip your pistol, lift the FCU out of the existing grip module, and drop it into the TXG housing along with your slide and barrel assembly. The added heft of the tungsten-infused polymer makes this module especially popular with competition shooters and P320 owners running shorter slides or compensators, where a heavier grip helps balance the pistol and keeps the muzzle down between shots.

The Sig Sauer P320 modular system lets you build, tune, and reconfigure your pistol around a single serialized FCU, and the P320 X-Series TXG Large Grip Module is one of the most popular ways to add mass, balance, and a refined feel to a full-size P320 carry, duty, or competition build.