Description
This Sig Sauer P320 X-Series grip module is a medium-size, full-size frame option built to accept the P320 Fire Control Unit (FCU) for easy configuration changes. It is molded in black polymer and is made for full-size P320 slide assemblies noted as 4.70″ in the product fitment information. The module features the X-Series extended beavertail profile and is compatible with 9mm Luger, .40 S&W, and .357 SIG slide/barrel assemblies. Install the FCU into this grip module and pair it with the appropriate slide assembly to convert a P320 to X-Series full-size configuration.
Key Specifications
- This module fits the Sig Sauer P320 platform.
- Intended size is Medium.
- Designed for full-size (4.70″) slide assemblies.
- Compatible calibers are 9mm Luger / .40 S&W / .357 SIG.
- The frame material is Polymer with a Black finish.
- The exterior finish is Matte.
- The listed weight is 0.4.
- This module does not include the extended magwell or the internal weight.
- Compatibility note: it will not work with magazines that have “SIG SAUER” on the baseplate; it is compatible with baseplates bearing the SIG mark.
The P320 X-Series medium grip module provides a straightforward way to change the ergonomics and handling of a full-size P320 without altering the FCU. Its X-Series beavertail profile and medium girth suit shooters who want a more aggressive handhold and full-size slide compatibility while retaining Sig Sauer modularity. For owners looking to reconfigure their P320 for competition-style controls or a more substantial service grip, this module is a precise, factory-compatible option.







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