Sig Sauer P320 X-Series Grip Module — Small, Black Polymer

This Grip Module Assembly is designed for use with the Sig Sauer P320 fire control unit to configure the pistol as an X-Series Full-size. The listing identifies the module as a Small-size X-Series unit finished in black polymer and references compatibility with 9mm Luger, .357 SIG, and .40 Auto when used with the matching slide and barrel. The module does not include the extended magwell or internal weight and has specific magazine baseplate compatibility requirements.

Key Specifications

• The intended configuration is X-Series Full Size.
• The grip module size is listed as Small in the provided product text.
• Supported chamberings are 9mm Luger, .357 SIG, and .40 Auto.
• The frame material is Polymer.
• The finish/color is Black.
• This unit is compatible with full-size P320 slide and barrel for 9mm/.357 SIG/.40 Auto as required for conversion.
• The module does not include an extended magwell or internal weight.
• Magazine compatibility: Not compatible with baseplates stamped "SIG SAUER"; compatible with baseplates bearing the SIG mark.
• The model designation shown is P320.
• The product type is listed as Pistol grip module assembly.

Built to integrate with the modular P320 system, this X-Series Grip Module Assembly provides a factory-styled route to a full-size X-Series setup while keeping components interchangeable. Its black polymer construction and compatibility with common P320 service calibers make it a practical choice for users pursuing a durable, modular platform for range use or customized builds.