M1811 Grip Module
Compatibility: Sig Sauer P320 9mm / 357 sig / 40
Requires:
17+ round magazines with current gen “square base pads”
current gen slide stop / release lever
Pairs well with
M1811 Grip Module
The Ultimate P320 Upgrade
The Brouwer M1811 Grip Module corrects the main ergonomic issues with the P320 platform – high bore axis, rounded slippery grip, short beavertail. The modern 2011 pistol is the standard for shooting performance, control, and ergonomics.
With the design of the SIG P320 series, we were able to bring some of that performance and control to polymer pistols.
Brouwer Grip Module Summary Of Improvements
Improved Handling:
The Brouwer P320 Grip Module greatly improves point of aim repeatability by utilizing ergonomics nearly identical to the 2011. The front strap angle has been changed to 107.5 degrees, with a back strap angle of 67.5 degrees to cause the pistol to seat into the hand when gripped. This geometry aids the shooter by placing the bore axis in a natural position.
The beaver tail has been moved up to reduce the height over bore while still maintaining the full functionality of the SIG P320 fire control group. The beaver tail has been profiled to draw the hand into the gun while providing a large surface to aid in reducing the effort to mitigate recoil. The rear profile of the beaver tail has been shaped to reduce catching the web of the user’s hand when gripping the gun promoting quick grip acquisition.
A large trigger guard was kept to ensure use with gloves in cold weather and reprofiled to remove unnecessary features. The profile of the trigger guard was moved up as high as possible to improve grip index relative to the beavertail while maintaining clearance for the P320 trigger. The tolerancing for the mag release button has been reduced to combat dust ingress.
Factory Compatibility
The grip module is designed to use all factory equipment that comes with a SIG P320: Fire control unit, magazine catch (reversible), slide stop, take down pin. The module accepts factory SIG P320 magazines (9mm) 17rd, and 21rd. The module is compatible with both Safety Selector equipped P320 and without. In order to work with Selector-equipped models, a small cut must be made. An interior outline has been molded into the part to assist with making the cut. We recommend a small rotary tool, such as a Dremel with a 1/8” burr bit. If this modification is not something you would like to perform, we offer it as an additional service which you can select on the store page before adding to cart.
Holster Compatibility
The M1811 grip module has been provided to the following manufacturers. They have tested the M1811 with their products and provided their feedback and assessment of compatibility.
Safariland:
Fully compatible.
Haley Strategic:
Incog X fully compatible.
AlienGEAR:
Rapid Force, Photon both light bearing and non are fully compatible. The cloak series will vary depending on the configuration.
RDR Gear:
All IWB are fully compatible.
T.REX-Arms:
Fully compatible
Carey Concealment:
Fully compatible
Tier1 Concealed:
Fully compatible
Grip Texture
Simulated side scales similar to the 1911 are present to stiffen the grip and fill the natural void in the palm of the hand without increasing the front and back strap radii. The front and back strap have been checkered with 25 lines per inch to improve grip without damaging clothing.
Improved Magwell Design
The grip modules magwell has been profiled to ensure a loaded magazine can be inserted at up to 45 degrees out of rotation, and 20 degrees out of axial alignment with the magwell.
Proprietary Polymer Blend
The M1811 grip module is molded with a proprietary blend of polymer. A significant increase in fiber and a premium resin composite provide increased rigidity.
Magwell Extension
The grip module is capable of accepting an additional flared magwell extension should the user desire.
Accessory Rail
A MIL-STD-1913 Picatinny rail is maintained under the slide in front of the trigger guard. Note, installation of a light, or under barrel attachment adjusted for a P320 may require a universal mount adapter as the trigger guard has been improved.
Note: please use the “U” adapter plate for surefire products.
Accessory Compatibility
- The M1811 grip module is designed to fit flush with a 3.9” barrel slide. It is also fully compatible with full length slides, and shorter.
- The module is compatible with 17 and 21 round magazines. They must have the newer square peg base pads which feature beveled sides. The older round peg base pads will not work.
Colors:
M1811 is available in Black and Coyote.
Textures:
Also available with deep laser engraving with cerakote options: Black, Coyote, O.D. Green, Sniper Grey. (+$120)
I picked up this grip module about a month before getting my M18. The day i picked up my pistol, I immediately installed this. FCU dropped in easily with no issues. This grip feels so much better than the stock one and has a more natural feel in hand. Went ahead and added some Handle It Grips to the panels for more of that G.I. Joe kung fu grip action too! Definitely getting the magwell soon to go along with it.
Grip module makes the 320 feel like a much higher quality and more expensive pistol. Tracking the sights through transitions, and longer strings of fire has become much better for me. Reloads are also a breeze!
Great grip, only problem is I wish the flared magwel was included in it and not an additional $80.00 unfortunate you have to spend $160.00 for both one of which is a little piece of metal that goes on the base…
Feels great in the hand, and the grip angle makes for a very natural point of aim. Worth the hype
The M18 grip is a great upgrade for the 320 line of pistols. I currently own several grips for comparison, Sig TXG, Sig factory 320, Sig AXG and Mischief Machine. My main range gun is the MM grip frame with. a PMM Tardigrade upper. So naturally I went with the same style frame and grip angle for daily duty carry. I love everything about the grip except the texture. It is way too smooth and the laser stippled grips are way too much in my opinion. However, with the help of OTD and all of their stippling accessories the M18 is rocking.