Rated 5/5 based on 16 customer reviews
Item Number: 320-CCSB
 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 itís 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 ďWilsonĒ.  We believe it is the most practical, comfortable and stylish P320 grip available and the ideal choice for practical shooting or defensive handgun use.

Compatible with Compact slide and 15rd Compact magazine.

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 Combatís 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, reholstering
  • 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
Fantastic upgrade butÖ
Overall, I love the grip module. Really enhances grip and control to get back on target faster. My only gripe is that some Sig mags stick because the baseplate has a slightly wider flange that comes up on the body of the mag. And yes, these are legit Sig mags.
Love this grip
I suffer from ďanalysis paralysisĒ so Iíve spent months watching videos and ruminating on buying this grip. I finally got one because the price dropped and I figured it would be okay if I didnít like it. The only thing I didnít like was installing the mag release. Capturing that little spring is a bear! Now that itís on my 3.6Ē slide and Iíve put some rounds thru it, side by side with the stock gripÖI need another one.
A new P250 pistol
Well, I put one of these on a 40 cal. P250 compact. That it became a new pistol is an under statement. If Sig could have used these instead of the one they did it might have sold better. All I can say is buy one now and put your 320 in it. The grip angle is perfect, the under cut perfect, and the grip size, well perfect.
Wish i had ordered the WC grip module sooner
I bought my p320 5yrs ago and changed the module once. I couldn't seem to get the right fit. I'm a left handed shooter, already a strike against me. Now that I'm practicing for my ccw I found out that I can't get on point with the stock grip. I watched several reviews on YouTube and decided to give it a try. I must say I was amazed at how quickly i could get on target! the fit was just what I needed. A little heavier stipling on the sides would have been perfection for me. As someone else stated regarding gen 1 mags. Base plates can be bought to fit the mag well. Regret not buying sooner.
Modifying the P320C 15 Rd mag if it doesn't fit
I have an early P320C (compact) that came with 2 15 rd mags. These mags will not seat in the WCP320 grip module as footnoted in the WC fitment guide. I shaved off the tabs on each side of the magazine base plate and it fits perfectly. You're on your own if you do this. All I am saying is it worked for me. Otherwise, get the 17 rd Sig mags but these will extend beyond the base.
Provides a very strong grip & looks cool.
I was a little skeptical, but I decided to order the module figuring at least it gives a nice custom look & it's Wilson Combat. I was surprised. It does provide a significantly stronger grip than the original. The improved grip is due to the more aggressive texture, the beaver tail and the cut under the trigger. My hand is medium sized, and these 3 characteristics give me a very solid hold. It should improve controlling muzzle flip and follow up target acquisition. Be careful not to lose the mag release spring and wedge. However, if you do, it is a direct replacement of the original. I found the wedge on the floor AFTER I got it all back together.
Absolute home run
I have the original p320. With medium grip then purchased a large sig grip beacause I have big hands but neither felt quite right . Took a chance on Wilson combat grip and this is absolutely amazing ! Perfect circumference, intuitive presentation, stippling just right for big hands and nice and aggressive. I canít say enough good things. Thank you Wilson combat . If youíre on the fence just do it
P320C WS Grip
My first grip module was stolen out of my mailbox. I reached out to WC and they had a new one shipped out to me same day. Grip itself is pretty aggressive compared to the stock module, and is slimmed down in all the right places. Awesome product!
Perfect grip for me
I have a Sig 320 RXP compact and the factory grip was just slightly to big for me. This grip is slightly smaller in the sides and fit me perfect. It is very high quality and I added the weights for it. Everything fit perfect and ran fine. My stock mags fit perfect with no mods necessary. The front and back strap were a little too aggressive for me and I sanded the sharp humps so it wouldn't irritate my soft skin. The sides of the grip are fine.
Great Upgrade
I love this grip, i had the stock grip on my carry model and when I changed it over, it truly felt like a different pistol. Not as bulky, all the contours enhance my grip. Excellent idea and follow through from Wilson.
I pulled the grip out of the bag, held it in my hand and it was perfect. It only got better when I put my trigger and slide on. It makes me want to spend more time at the range. Not sure if thatís a good thing financially speaking with the cost of ammo. What a great product. Iíll have to get the coyote version as well. Thanks Wilson for knocking it out of the park.
Perfect fit!
The stock frame was a hair too large for my hands.(dinky lady hands here) This frame is slightly smaller in circumference has much better ergonomics and makes my 320 feel like a whole different pistol. I love what these guys have done here!
Great Upgrade.
Great upgrade to an already great firearm. This grip module is like having a custom grip done, but for half the price it would normally cost. Good work guys!
Best Ergonomics
I have owned a P320 since the beginning. I had the original grip module, then the X Carry, briefly tried the X Compact, but the WC Module has the best ergonomics of them all, and the best stock texturing. I realize that ergonomics can be a very subjective and personal thing, so here are my reference points. The WC EDC X9 is the most Ergonomic pistol I own, with my Sig P226 with G10 grips being an extremely close second. This WC grip module makes my P320 a close third, which is saying something compared to two much more expensive all metal guns with G10 grips.
The factory Sig grip is a really good and I love it. The WC grip mod is tremendously tremendous! The next level, well done!
This grip module is absolutely amazing! If you have the original P320 grip and think it fits well in your hand, wait until you throw this on there. The feel of it is almost personal to the gun, and will make rapid fire noticeably more controllable. The only thing to watch out for is if you have the old 320 magazines you need the new 320 baseplate. Conveniently Wilson combat sells just the new baseplate for $9 instead of having to buy entirely new magazines which saved me a lot of money. Installing tip: if the FCG isnít seating all the way into the grip module, put the slide in the grooves and push the slide back with a decent amount of force and it will seat in the grip smoothly.