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5 Best Glock Conversion Kits to Turn Pistols into PDWs

So, you want a newish firearm but don’t have the money to drop on a brand-new gun? Oh, and you happen to have a Glock laying around?

Glock G17 and G19 Gen 4
You know, just have these hanging out.

May I present an option…the conversion kit.

What is a conversion kit?

Roni brace and Glock
Conversion kits transform your Glock into something a bit cooler.

It gives you the means to expand the capabilities of your already trusty Glock into a personal defense weapon with extended range, improved accuracy, and more!

We’ve thoroughly analyzed the marketplace for these conversion kits to determine the best of the best.

So, follow along as we break down which Glock conversion kits you should consider.

Best Glock Conversion Kits

Before we dive in, it’s worth mentioning that you have to be really careful with conversion kits.

Many of these can turn your handgun into a Short-Barreled Rifle or Any Other Weapon. This means you need to register the thing if you want to avoid giving the ATF a reason to kick down your doors.

ATF Legal seagulls

As always, do your research on any conversion kit on the market and the applicable laws before purchasing/putting your handgun in it.

1. CAA Micro Roni Conversion Kit

If you’re looking for a conversion kit that’s easy to assemble with no tools – grab a drop-in style kit such as the CAA Micro Roni.

This kit allows you to insert your Glock in a matter of seconds, making for a very quick and seamless transition.

Roni Micro brace
Micro Roni

Once you have your Glock converted, you’ve now drastically improved accuracy out to 200-yards.

Want to add a red dot, flashlight, or other accessories? Thanks to both its side and top Picatinny rails, there’s plenty of space to do that here.

The CAA Micro Roni is ambidextrous, meaning that you can easily use it regardless of whether you’re a righty or lefty.  

For ease of one-handed use, this kit comes with an arm brace stabilizer and a Velcro strap. It also easily folds out of the way when not in use.

Using the Roni brace
Using the Roni.

And, with the addition of a front spare magazine holder, you’ll always have ready access to another mag for seamless reloading.

The CAA Micro Roni gives you a lot of leeways when it comes to universality as well.

Whether you have a Glock 17, 19, 19X, 22, 23, 25, 31, 32, or 45, all of them will work within this design.

at OpticsPlanet

Prices accurate at time of writing

Prices accurate at time of writing

We did a head-to-head review of the Micro Roni vs. RT 20/20. Check out the results here.

2. Roni Recon

Another fantastic drop-in style conversion kit by CAA, the Roni Recon, will give you quick means to increase the range and accuracy of your Glock.

There are three Picatinny rails, and this kit will even accept suppressors up to 35.5mm in diameter.

Best 9mm and Multi-Caliber Pistol Suppressors
Did someone say, suppressors?

Don’t like the idea of your brass falling all over the ground? There’s an optional quick-release brass catcher for that.

Combine all that with the ability to work with the Glock 17, 19, 22, 23, 25, 31, 32, 34, and 35, and you have a very adaptable kit.

Roni Recon

The one caveat is that the forward grip on the Roni classifies this as Any Other Weapon, according to the NFA. And the addition of a stock will create an SBR.  

So, you need to submit the required paperwork and pay the tax on this one.

at Glock Parts

Prices accurate at time of writing

Prices accurate at time of writing

CAA Roni Recon

Prices accurate at time of writing

3. CAA MCK Micro Conversion Kit

By now, you probably recognize the fact that CAA is one of the chief players within the conversion kit market.

While the micro conversion kit is very similar in look to the Micro Roni, its main difference is that it’s capable of shrouding the Glock 20 and 21 Gen 3.

CAA MCK Jerking the Trigger
(Photo: Jerking the Trigger)

As is the case with virtually all other CAA products, this kit is a drop-in style. It offers an ambidextrous design with a folding arm brace. And it comes with a built-in front spare magazine holder.

CAA claims this improves your accuracy out to 200-yards.

In short, it’s an awesome kit for a great price. And one you may want to consider if you use a model of Glock that a lot of other kits out there won’t accommodate.

at Palmetto State Armory

Prices accurate at time of writing

Prices accurate at time of writing

4. FAB Defense KPOS Scout

Another major player within the conversion kit world is FAB Defense. It can be a bit harder to find their products out in the marketplace, but if you look long enough, you’ll find them.

Chief among their designs for the Glock is the KPOS Scout.

KPOS Scout
KPOS Scout

This thing packs up into a teeny little package and seems to be akin to an envelope — everything on it folds up! You have a folding foregrip, folding stock, and flip-up sights.

It can accommodate a wide variety of ported Glock models, such as the Glock 17, 19, 22, 23, 25, 31, and 32.

For ease of long-term carry, it comes with a one-point tactical sling as well.

Like most conversion kits on the market, this contains a Picatinny rail upper for various attachments.

You will need to register this as an SBR with the ATF if you want to remain legal, though.

at Fab Defense

Prices accurate at time of writing

Prices accurate at time of writing

5. FAB Defense KPOS G2 PDW

Another conversion kit that will transform your handgun into an SBR, the G2 PDW, has a host of options available to it for customization.

Depending on the variant you purchase, you can use a Glock 17, 19, 20, 21, 22, 23, 25, or 34! There are some foldable stock options you can select for this weapon as well. So it’s very easy to move about.

It comes with a removable flash hider if you want to add on a suppressor and offers a built-in AR-15 style charging mechanism (ambidextrous, of course).

Even better, it requires no tools or handgun modifications to use either.

at Fab Dedense

Prices accurate at time of writing

Prices accurate at time of writing


A conversion kit truly gives you a wide range of options when it comes to your Glock. Not to mention, it gives you quite an edge when it comes to long-range work with your pistol.

Micro Roni with Glock 19
Micro Roni and Glock 19.

If you have some extra gun money laying around, consider grabbing one of these kits (and the required tax stamp if needed). I don’t think you’ll be disappointed.

Are there other conversion kits on the market you think should have made this list? Have you had the opportunity to try any of the above? Let us know in the comments below! Want to shop more Glocks? Check out the Best Glocks: Across Calibers & Sizes.

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4 Leave a Reply

  • Commenter Avatar

    I had a Micro Roni felt kind of cheap to me. Just didn't feel solid. Sold it to a buddy he loves it. To each his own but I'm not a fan.

    July 21, 2021 2:24 pm
  • Commenter Avatar
    Steve Sheridon

    Sorry folks- Any pistol conversion kit that touches the slide of the pistol is inherently dangerous....I know- I had a G19 inside a Roni blow up in my hands whilst shooting rapid fire here in Israel. Polymer rubbing against the slide can mess up the timing and cause an ignited round before full lock up of the barrel.....that's what we think happened in my case... My Glock was destroyed....Thank G-d I was uninjured.....

    July 19, 2021 11:31 am
    • Commenter Avatar

      Good point! First time I hear this comment and was already considering this purchase after reading several comments and reviews with no mention to this! Thanks!

      July 20, 2021 7:01 pm
    • Commenter Avatar
      David Dominiecki

      The recover tactical 2020 contacts the beaver tail and the lower rail adapter of the pistol. I do not see it Maki g contact to the slide.

      November 14, 2021 1:04 pm
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