This is a Wilson Combat Grip Panel known as the WC320, model 320-FST.
The impressive modular capability of the SIG-SAUER P320 is why it has become a favorite with practical shooters and it's thoroughly tested design will be the official US Military sidearm for many years to come. Wilson Combat has now reengineered the P320 grip frame to optimize its practical shooting potential. This all new molded polymer grip module will enhance your grip and improve recoil control. Their significant improvements in shape" texture and overall ergonomics will give your P320 the superb feel of an expertly hand sculpted custom gun with a simple grip change.
Features:
Caliber Availability - 9mm, .40 S&W, .357 SIG
Upgraded, high-cut 1911-style beavertail grip tang for smooth draws
Undercut front-strap and reshaped, radiused trigger guard for the highest grip possible
Enlarged, integrated magwell opening for fast reloads-compatible with the latest generation SIG-SAUER X-series factory basepads
Improved grip traction and grip pattern with Wilson Combat's Starburst grip pattern on the sides and aggressive texturing on the front and backstrap
Frame reference serrations for support hand thumb or index finger positioning
Internal Slots for Rod-style Tungsten Weights
Angled Holster Cuts on light rail to aid in snag-free, re-holstering
Factory SIG-SAUER magazine release pre-installed
Compatible with all standard holsters
