Sig Sauer GRIPMODXF943SMBLK P320 Grip Module X-Series (Small Size Module), 9mm Luger/40 S&W/357 Sig, Black Polymer, Fits Full Size Sig P320 (4.70")

The Sig Sauer GRIPMODXF943SMBLK P320 Grip Module X-Series represents a modular platform solution for operators and serious shooters seeking multi-caliber flexibility within the proven P320 ecosystem. This small-size grip module accepts 9mm Luger, .40 S&W, and .357 SIG firing control units, enabling field-configurable caliber changes without purchasing entirely new pistols. The X-Series frame geometry incorporates refined ergonomics and structural geometry optimized for modern tactical and duty applications.

This grip module is engineered to convert your existing P320 firing control unit into a full-size X-Series platform when paired with appropriate 9mm, .357 SIG, or .40 AUTO slide and barrel assemblies. The black polymer construction provides proven durability across duty, training, and field conditions. Critical compatibility note: this assembly does not include the extended magwell or internal weight found in certain X-Series variants. Magazine selection matters—the X-Series grip modules function only with magazines featuring the SIG Mark baseplate, not legacy "SIG SAUER" baseplates, a distinction that prevents feeding issues and ensures reliable operation.

This module serves law enforcement duty officers, military end-users, competitive shooters, and defensive pistol practitioners who value platform standardization and the ability to reconfigure their primary weapon without complete system replacement. The small-size frame scales appropriately for operators prioritizing concealability, reduced hand fatigue during extended shooting sessions, or improved control in compact platforms. Those operating standard or large-frame P320 systems seeking a dedicated compact option will find this module pairs directly with their existing firing control group infrastructure.