Glock Grip Force Adapter

By on February 20, 2013

One of the issues I’ve always had with a Glock is this:

Slide bite has always gotten me.  I’ve got big fat hands and they squish up over the back strap just far enough so the slide rubs the top of my hand when it cycles.  I have scars on the web of my hand from where the slide moves over my skin.  It never really hurt but did create an open wound I had to deal with.  It was more annoying than anything else.  Step in Grip Force Adapter.


These are back straps that go onto a Glock to create a beaver tail more like a 1911 than a Glock.  I saw these when they first came out and ignored them as something that was just a gimmick.  A couple months ago, a student brought a Glock to one of my classes and let me shoot it.  I thought it was really cool because it got rid of my slide bite.  It didn’t move around and the owner told me that it hadn’t fallen apart yet.

I ordered one and found out that the company is doing a 2 for 1 deal trying to promote their new smooth back strap.   So I got two of them, one smooth and one ribbed.  The company sells two different models, one for the Generation 1, 2, and 3 models and a different model for the new Generation 4 Glocks.  But here is what I liked, the Gen 1, 2, and 3 will fit on the Gen 4 pistols with the medium back strap on it.   With the 2 for 1 going on, I got one for both of my Glocks.

I put them on my Glock 19 Gen 3 and my Glock 19 Gen 4.  They fit with a little room on all of them.  I thought it should have less of a line and was worried that they would rub in my hand and be uncomfortable when shooting for a long time.

I also went against Grip Force’s guidance and installed it on my Gen 4 without the medium back strap.  It worked with a little play but felt fine.  I took both guns to a weekend course.  My Gen 4 worked for day one and broke on me, but that’s another story.  The Grip Force Adapter worked fine.  The only problem was that the company was correct.  I had to push the pin back into the gun multiple times during the course because it was walking out.  This isn’t a big problem with a Gen 4 since the pin really only holds the back strap on.  On a Gen 3 the pin also holds together part of the trigger mechanism so I suggest following the factory’s recommendation about what size to put on what gun.  They explain it on their web site here.

When I picked up the gun at first, it felt a little different and I was worried about it throwing off how I pointed the gun.  I was surprised when I started working with both guns that I didn’t even realize the Grip Force Adapter was there.  The only time it mattered was at the end of the day when I looked at my hand and didn’t have the normal wound from the slide.

The gun still fit in all my holsters, I can’t feel the extra part while I’m carrying it concealed or open.  I don’t notice it when I’m carrying the gun in my gun bag.  It turns out that the only time I ever notice the part is when I look at the gun or at the end of shooting session because there is no more blood to clean off my hand or gun.

If you have fat/big hands like me and get slide bite from your Glock, you should get one of these.  It’s well worth the $24 I paid for them.  I liked the slick one better so I bought another one so I can have the same one on both guns.

If you are going to buy one, please use the link here or at the top of this article to buy from Amazon.  I get a tiny kickback to help pay for this site.

Stay Safe,


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  1. Steve
    April 29, 2017

    Leave a Reply

    Ben, I used the ribbed grip force adaptor on my Gen4 G19 at a high round count, 3-day class. (1500 rounds) I developed a blister at the base of my strong hand thumb just above the web adjacent my thumb. I have a caulis there now.
    I decided to place the smooth adaptor on my Gen4 G19 and there seems to be no problem with at issue. I used this adaptor with no back strap on the Gen4. Is that a problem?

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