M1811 Grip Mod Custom 3.6in

From $114.95

(8 customer reviews)

Compatibility: Sig Sauer P320 9mm / 357 sig / 40

17+ round magazines with current gen “square base pads”
current gen slide stop / release lever

Fits flush with 3.6″ barrel P320 slides.
***Requires: 17 round+ magazines***


M1811 Grip Module - 3.6in
This is a Custom in house modified version of our base product, designed to fit flush with 3.6in barrel slides. For more information please read the full description at the bottom of this page.

The M1811 Grip module for the Sig P320 has a conservative texture. Ideal for low cling applications such as concealed.

Please Select a color.
1 × M1811 Grip Module - Custom Cut 3.6in Black

Only 4 left in stock (can be backordered)

1 × M1811 Grip Module - Custom Cut 3.6in Coyote

Only 4 left in stock (can be backordered)

Magazine Release
If you would like us to install a magazine release for you, please select one below. Make sure to select the correct left hand or right hand dominant installation. A right handed installation will place the button on the left side of the M1811.
1 × OEM Sig Magazine Release - Right Hand

In stock

1 × OEM Sig Magazine Release - Left Hand

In stock

Align Tactical Magazine Release
1 × Align Tactical Offset Extended Magazine Release - Right Hand

In stock

Align Tactical Magazine Release
1 × Align Tactical Offset Extended Magazine Release - Left Hand

In stock

Cut Out Service
If your P320 Fire Control Unit (FCU) has a safety selector, the M1811 is designed to be easily modified with an 1/8" bicut carbide bit and a dremel. Just follow the inset depression on the inside of the module. However, if this is a modification that you would prefer we make for you, select it from the option below.
M1811 Close Up Safety Cut Out
1 × Safety Selector Cut out Service
If you would like us to install a magwell for you select it from the below options.

Backorder update: Magwells are in constant production, as we work to get caught up, leadtimes are 2-4 weeks.
1 × M1811 Grip Module Magwell - Hard Black Annodized

In stock

1 × M1811 Grip Module Magwell - Annodized + Cerakote Black

In stock

1 × M1811 Grip Module Magwell - Annodized + Cerakote Coyote

In stock



The M1811 Grip Module – Custom 3.6in, is a custom modified version of our M1811 polymer grip module for the SIG P320. Following the feedback from our customers, we have decided to provide a few of these, on a first come first serve basis.

We take our M1811 grip module and cut the dust cover down to fit flush with shorter 3.6in barrel slides. We add a chamfer to the bottom face, and deburr the corners. These modifications are performed by us in-house, to make the option available for people that want this modification, but don’t want to do it themselves.

Note, the 3.6in version, is still compatible with all your P320 components (FCU, magazine release, slides of all lengths), but it must use 17-round minimum magazines. If you have 10-round magazines, make sure they feature the same external dimensions as the 17-round magazines.

Additional information

Weight .5 lbs
Dimensions 7 × 12 × 1.75 in

Black, Coyote

8 reviews for M1811 Grip Mod Custom 3.6in

Based on 8 reviews
5 star
4 star
3 star
2 star
1 star
  1. Gabriel Marchant (verified owner)

    Grip module is on point!! Y’all know my text group was jealous of this one!!

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  2. Joshua Espinosa (verified owner)

    This is what I have been wanting. I got the full size and the modified shorty version and they are both the best modules I have. And I basically have every grip module other than some steel/aluminum ones. Out of polymer ones it’s definitely the best.

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  3. KYLE BEAN (verified owner)

    (1) (0)
  4. Tim (verified owner)

    (1) (0)
  5. cbenedict (verified owner)

    This is the best polymer grip module I have used on the P320. Feels great in the hand and passes the soap test (get your hands wet and get a bunch of dish soap on your hands to be slick as can be. simulates blood and sweat) The built in magwell has a great flare and is great for standard needs. Wish I would have just got this one in the first place, would have saved me a ton of money.

    (1) (0)
  6. Clark (verified owner)

    Install was easy and straightforward. Love the 3.6in grip length for my concealed carry. Easily swapped with my X-Compact grip module and aiming feels more natural. As the description states you need the 17 or 21 round magazines. I attempted adding the GrayGuns +5 extension to my Sig Sauer 15 round magazine but the feed lips/follower are a different design and therefore do not lock into place. Overall, very happy and love that Brouwer decided to give us a 3.6in option!

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  7. Mark (verified owner)

    Phenomenal product! Great design, super comforting grip with the perfect grip angle. This made an uncomfortable gun perfect for carrying and added capacity from 15 to 17 rounds. I run this in a Tier 1 concealment rig with a 21rd backup! I am a repeat customer and will continue to buy more from this outstanding company! Thank you Brouwer for providing superior solutions! I now can put another tool in my daily loadout.

    Image #1 from Mark
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  8. Sean Barley (verified owner)

    Build quality is excellent. The grip angle, that’s where the magic is. Naturally points, wrist and hand lock up exactly as they should with zero feeling that the wrist is impinged.

    Image #1 from Sean Barley
    (2) (0)

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