CAA has recently upgraded their Roni carbine stock kits. We saw them at Big 3 East last March. I was particularly interested in the rifle kit for its potential in USPSA’s new Pistol Caliber Carbine division.
The rifle kit comes with a very important piece, the 16″ Glock barrel. Installing this barrel keeps the pistol legal as a rifle when inside the Roni chassis. No need to file Form 1 and SBR your Glock.
Along with the 16″ barrel there is a T-shaped charging handle that slides over the rear sight. The charging handle has ridges that line up with the factory slide serrations. So it you have a Fish Gill RTF Glock, the charging handle will not work.
The instructions were a bit vague and did not clearly explain how to open the chassis. It took a bit of exploratory trial and error to figure out how to open the chassis. I should have looked on Youtube as there are plenty of videos. I did make my own video explaining the rifle carbine kit.
I had some issues with fail to eject but I believe that is due to my franken-Glock. The only Glock that I have, that will work with the Roni carbine kit is my Gen 3 Glock 22 lower and Gen 2 Glock 17 upper. Gen 2 Glock frames will not work because the Roni chassis works using the accessory rail as a contact point. There are three points of contact on the Glock frame. The accessory rail, trigger guard and beaver tail. Since the Gen 2 Glocks do not have a slot for a pistol light, the dust cover sits on top of the ridge and pushes the barrel and slide up. This then causes the ejection port to get caught on the inside of the Roni Chassis.
Here is a test of the IGB Austria 16″ barrel inside the Glock. As you can see it functions flawlessly. The design of the barrel is very important. As many of you know, adding weight to a tilting barrel tends to make the gun not cycle. Hence why pistol suppressors have Nielsen devices.
IGB Austria is the company that makes the 16″ barrel for Roni. If you look at regular IGB Austria’s carbine barrels they have something called an Impulse System.
he IMPULSE SYSTEM uses powder gases, collected via ports in the barrel and transfers this energy via ahollow chamber (gas collector or impulse chamber) and a sliding element (impulse transfer ring) to the slide. This impulse equalizes the mass irregularities and allows reliable function even with heavier or longer barrels.
However the Roni carbine barrels do not have this impulse system. Instead they have some interesting diameter changes. If you look below, you will see a section of narrow barrel between two wider sections. The front thicker section of the barrel is where the slide interacts with the barrel when the slide is closed. This centers the barrel in the slide. I am not sure what the thin ring in front of that swell is for. I believe the narrowing of the barrel behind the front is so that the slide does not drag on the barrel as the weight pulls the barrel down.
Here is another video but using the Roni Carbine chassis. I get the occasional FTE. I tried this same setup in a USPSA match and had too many fail to eject that I had to switch to a different pistol carbine.
I believe the issue is due to the Glock 22 ejector. Normally a .40 s&w ejector will work for 9mm if you are just shooting a Glock handgun. However since there is so much material surrounding the ejection port when you put the Glock inside the Roni. Perhaps the ejection is not conducive for this setup. I have since swapped out ejectors from my Gen 2 Glock 17 frame and this Gen 3 Glock 22 frame and from my limited testing I did not experience stove pipes.
The Roni now has an SB Tactical stabilizer version called Roni Stabilizer STAB. So you can keep your pistol if you like your pistol being a pistol. The Roni STAB works just like the Roni Rifle Carbine. Only difference is there is a metal shroud that you can see sticking out the front of the Roni STAB. The regular Roni Carbine has this metal shroud. The shroud has two positions. One for a Glock 17 and another for a Glock 19. You just push it in for Glock 19 and pull the shroud out for a Glock 17. There is a set screw that screws underneath through the bottom picatinny rail.
Since it is a pistol I cannot put a vertical grip on it, but I can put CAA’s side mounted bipod legs on it.
I got one of the Every Day No Day’s Off stock adapters so I could compare the two side by side. I used the Roni/IGB rifle barrel so I can legally shoulder these in their pistol setups. The ENDO stock kit has a longer LOP and is a much lighter setup. However there is very little to hold onto. you could try and mount a vertical grip to the Glock, as long as it is a rifle, AOW, or SBR, but the accessory rail is not designed for a vertical grip. That is where the Roni Carbine shines. you have ample picatinny rail to mount any accessory you want.
Here is my friend Erik trying out the ENDO stock with my Glock and 16″ Roni/IGB barrel
Now since I am a fan of USPSA, I tried to put my Glock 35 Gen 4 inside the Roni. Unfortunately it did not work. There is some plastic that interferes with the long slide and while I can close the Roni around the Glock 35, I could not cycle the action. It is the same problem as the Gen 2 Glock 17. The Glock has been pushed upwards and the slide interferes with the ejection port of the Roni chassis.
I was able to get the Glock 35 to work in the Roni Pistol chassis but it required a little modification.
Below is a close up of how the Glock 35 does not fit properly. While the trigger guard and beaver tail sit in the chassis just fine, it is the bottom of the extended slide that interferes with the chassis.
Well I removed the plastic that interferes with the Glock 35 slide and it functions perfectly. Below you can see the slot interaction with the chassis.
I also tried my friends’ Glock19 with Advantage Arms .22LR conversion kit. While the charging handle would not work with the slide, I installed the Glock 19 into the Roni chassis and it functioned great.
You will notice that the front shroud of the Roni pistol chassis has been removed. Once removed here is plenty of room for a pistol suppressor. I will be testing this out later once I get my hands on some suppressors. I did try mounting a gutted Spike’s Tactical Barking Spider and it does fit. It does not allow the slide to function though.
I tried using the Roni/IGB barrel in the Glock 35 but it had too many malfunctions. Mostly they were fail to feeds.
As mentioned in the youtube videos earlier, there are a couple issues. Using a Gen3 Glock, the magazine release is small and my thumb is not long enough to shift over and hit the release. I have to shit my hand position or use my left hand to release the magazine. Gen4 Glocks do not have this issue.
The metal screws have sharp corners and I do not see the need to use them. The cheek rest of the carbine stock is a tad too short that I find myself having to pull my head back to interact with the cheek rest.
The Roni IGB barrel is the best part of the Roni Carbine Rifle Kit. It provides opportunity to anyone with a Glock 17. Even for those in restricted states as long as you fix the stock so it does not collapse. The only problem is that it is limited to use in only a Glock 17. It won’t work in a Glock 19 or long slide variants.
I am looking forward to checking out CAA’s Micro Roni kit.
The Roni Civilian Pistol Carbine Conversion C-G2 rifle kit retails for $592. And that includes the IGB 16″ barrel. Well worth it considering an IGB carbine barrels are over $300.
The Roni Stabilizer STAB retails for $546. You are not limited to the Glock platform though. They make the Roni for CZ, Beretta, H&K, Sig Sauer, ArmsCore, Jericho, and Bersa Thunder.
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