Rated 5/5 based on 16 customer reviews
Item Number: 320-FSB
 Review Average:  
 Number of Reviews: 16
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Detailed Description


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.  Our 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.

Our fresh look at the P320 grip module incorporates the suggestions of tactical trainers, champion shooters and firearms experts into the final product that has a look that is unmistakably “Wilson”.  We believe it is the most practical, comfortable and stylish P320 grip available and the ideal choice for practical shooting or defensive handgun use.

These are non-serialized, newly manufactured grip modules and are not a serial numbered firearm.

The Wilson Combat SIG-SAUER P320 Polymer Grip Module 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 increased grip pattern coverage with Wilson Combat’s exclusive 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** (Click Here for Tungsten Weight Kit)
  • Angled "Holster Cuts" on light rail to aid in snag-free, re-holstering
  • Factory SIG-SAUER magazine release, spring, and lock included
  • Compatible with all standard holsters
  • Compatible with all current production, X-Series basepads

**Not compatible with X-Five Tungsten Weight


DISCLAIMER: "SIG" is a federally registered trademark of SIG SAUER Inc. and is one of many trademarks owned by SIG SAUER Inc. 

Neither Wilson Combat nor this website is affiliated in any manner with or otherwise endorsed by SIG SAUER Inc.  The use of "SIG" or "SIG SAUER" on this page is merely to advertise the sale of SIG pistols, parts, or components.  For genuine SIG SAUER Inc. products and parts, visit


P320 Grip Removal/Replacement:

  • Unload and clear your pistol.
  • Remove the slide assembly and set aside.
  • Remove the takedown lever out of the factory grip from right to left and set aside. You may need to twist/tap the takedown lever out with a non-marring tool as it is retained by a spring in the chassis.
  • Lift the chassis straight up and forward out of the stock frame.
  • Install supplied magazine catch, spring, and lock into the WCP320 Grip Module
  • Reverse the process to install the chassis into the grip frame and re-install the takedown lever.
  • You may need to tap the takedown lever in place with a non-marring tool. 
  • Reinstall the slide assembly and move the takedown lever into the locked position.
  • Ensure that your pistol functions properly and your magazine drops cleanly after installation of the new grip frame.



 Product ReviewsClick here to review this item
Outstanding grip module.
Got mine today installed within 30 minutes of receiving it and it feels great. Like all Wilson products outstanding.
This is one of the best Grip modules made for the P320 please, please,please, please! Make one for the .45/10mm P320’s. Some of us still shoot with Man hands 😂😜
Great Replacement if you don;t like the X-Five Grip
Had no issues replacing the grip frames with my X-Five. For me Wilson got it right. With the new IDPA Rule Book is this module IDPA Compliant for SSP Division? Thanks Bill...great design.
Improvement over original Sig grip
This grip will take all of my mags. I have a P320 Full size and a Legend X Five as well as 21 +1 mags. They all work with this grip. My only complaint and thus the 4 rather than 5 star is that the weight bars really need to be part of the deal. I mean real, how expensive could they be and with out them (when the gun is not loaded) the grip feels chintzy and cheap. Also, I do not have gorilla hands but even so, it is a tight fit. Would love it if this came in a larger size.
Sig M17, it works!
Bought the full size rail grip module (no manual safety), says it wasn’t compatible, was disappointed at first as I had already ordered it, but figured I’d see if it fit, I ran several magazines through it with zero malfunctions. Way better than the stock module, gets rid of that weird palm swell on the stock mod, texture, fit, and feel are great, going to get the weight kit next and see how that goes.
Great Product But Sent Me a Defective One
I was sent this grip module to replace a very "blocky feeling X5 grip, that was too big for my hand. This one fits my hand much better and is easier to reach the magazine release button. Unfortunately, the front dust cover is slightly crooked downward in the front and looks bad. They are out of stock, so I have to use it as is, until they will hopefully replace it. If you get one, before glueing the weights into it, take a straight edge and check the dust cover, as this could be a repeatable mistake.
Better than stock Sig frame
Nice texture on front and rear, wish it went up higher. FCU was snug upon installation. Has run perfectly with a Sig pro-cut slide and Zev barrel. Will be purchasing a Carry II in the future.
Great Upgrade!
This grip module transforms the P320 X-Compact. It just feels so much better in your hand than the stock grip module, and the aggressive grip pattern really keeps the pistol secure. This is a great upgrade at a very reasonable price.
Much better than the x series grip
it's a huge improvement over the stock x series grip. I was worried it would be too small since i have wide hands, but it fit perfectly. The contouring is excellent and texture is much gripper than the original grip.
Dead Sexy Grip Module for the P320 Full Size
It brings my hand closer up to the slide. The grip texture is more aggressive and usable, even with Vasaline Intensive Care Lotion all over my right hand (don't ask why I know that). Shooting with this grip module gives me a feeling of less recoil and quicker followup shots. It also points more naturally for me. On top of all that, it looks great! I highly recommend this grip over the factory grip.
SIG should have let WC make this grip module for the original X5 legion. This grip module is AMAZING! The balance, pointing and reloads with my pistol is game changing now. WC hit a homerun with this one!
Made Great pistol even better
Always loved my Sig Sauer p320 but never really loved the grip. Had my name on a wait list for them to restock and yes it was worth the wait. Feels so much better in the hand and wow does it look great. This grip module made a Great pistol even better. Oh and I am using my older magazines with it I just used a drum sander on a drill press and sanded down the tabs so they fit into the new module.. Not hard to do, and they look great and fit and function as they should. Thanks Wilson Combat
Better than X-Five
I had bought the X-Five grip a while ago. Liked the ideal of the "flat" sides and more texture. How ever, "more" was not enough and I added stippling for a better grip. It was better than the stock grip but no where near as good as the Wilson Combat grip. This grip is perfect and just what I was looking for. Could not be happier. Feels much smaller and helps my damaged hand get a great hold.
It's 5 stars for feel and 3 stars for utility
great fit, feel and point ability. The beveled pic rail is a problem. Due to the taper on the leading edge of the compact grip module, the surefire XC1 cannot mount. I'd love to give 5 stars here, but given how common the XC1 is, this is a significant design goof. I'd recommend confirming compatibility before you buy or you may be in the market for a new WML and holsters.
Outstanding upgrade
I purchased the grip module for my X-VTAC. I love the way this grip feels compared to the stock grip. This is one of the best "bang for the buck" mods I've ever bought.
Fantastic Grip Module
This grip module feels great in my hand and provides a very natural point of aim. The aggressive texturing can be felt in a very positive and comfortable grip on the firearm and the frame serrations are also palpable. Everything about this grip module is a winner from the enlarged magwell to the improved trigger guard. Cannot wait to buy another one.