Sig Sauer GRIPMODXF943MBLK P320 Grip Module X-Series (Medium Size Module), 9mm Luger/40 S&W/357 Sig, Black Polymer, Fits Full Size Sig P320 (4.70")

The Sig Sauer GRIPMODXF943MBLK P320 Grip Module X-Series is a black polymer grip frame engineered for full-size P320 platforms chambered in 9mm Luger, .40 S&W, and .357 Sig. This medium-size module replaces the factory grip on 4.70-inch barrel P320 pistols, maintaining the modularity that defines the P320 system while delivering verifiable improvements in ergonomic control and pointing angle. For operators and serious shooters, a properly fitted grip module directly impacts first-round accuracy and follow-up shot management under demand.

The X-Series designation indicates this grip incorporates Sig Sauer's enhanced ergonomic geometry, including refined grip texture and contour relative to the standard P320 frame. The medium size module accommodates shooters across a broad hand-size spectrum without requiring glove removal or additional adapter sleeves. Black polymer construction provides consistent surface feel across temperature extremes and wet-hand environments common in tactical training and field deployment. The P320 modular platform allows users to swap caliber-specific fire control units into this frame, enabling cost-effective ammunition standardization and training flexibility across 9mm, .40 S&W, and .357 Sig without purchasing entirely new pistols.

This grip module is purpose-built for law enforcement duty weapons, military training platforms, and civilian shooters prioritizing multi-caliber capability. It addresses the practical need for drop-in upgrades that improve handling without modifications to internals or external controls. Compatibility is limited to full-size P320 variants with 4.70-inch barrels; subcompact and compact P320 frames require size-specific modules. Installation requires no gunsmithing—the fire control unit transfers directly from the original frame to the X-Series module, preserving zero and function while adding ergonomic refinement.