The Wilson Combat P320 Full-Size Grip Module (brand part number 320-FST) is a molded polymer frame built for the full-size SIG Sauer P320 platform, bringing Wilson Combat ergonomics to a duty- or range-sized pistol. Wilson Combat reengineered the stock full-size grip with a high-cut, 1911-style beavertail tang, an undercut front strap, and a reshaped trigger guard that let the shooting hand ride higher for better recoil control. Finished in Tan with no manual safety cut, it drops onto a factory full-size fire control unit for a direct grip swap that delivers a genuine custom-gun feel.

Key Specifications

• Sized specifically for the P320 Full-Size fire control unit.
• Compatible across 9mm, .40 S&W, and .357 SIG fire control units.
• Upgraded high-cut, 1911-style beavertail grip tang for a smoother draw.
• Undercut front strap and reshaped, radiused trigger guard for a higher grip.
• Enlarged, integrated magwell compatible with SIG X-Series factory basepads for faster reloads.
• Wilson Combat’s Starburst grip pattern on the sides, plus aggressive front and backstrap texturing.
• Frame reference serrations aid support-hand thumb or index-finger positioning.
• Internal slots accept rod-style tungsten weights (not compatible with the X-Five tungsten weight).
• Angled Holster Cuts on the light rail for snag-free re-holstering.
• Molded with no manual safety cut, matching standard full-size fire control units.

Frequently Asked Questions

What P320 size does this fit? It is built specifically for the full-size fire control unit.

Does it have a manual safety cut? No, it is molded without one.

Will factory SIG basepads work with this module? Yes, the enlarged magwell is compatible with current-production X-Series factory basepads.

Buy the Wilson Combat P320 Full-Size Grip Module, Tan

Bring custom-gun ergonomics to a full-size P320. Order it from our handgun frames selection at our Lubbock, Texas gun shop for fast, direct shipping.