Glock 23 Machine Pistol Configuration Part One

'Glock Full Auto - Initial Shots'
I had an all-metal Fire Selector Switch for Glock (FSSG) that was given to me by a gunsmith (see "My Fab Defense KPOS Review Part 3" for the full story), and I wanted to try it out, just to see how full auto fire would be with a .40S&W caliber round and a compact frame like the Glock 23. The FSSG is currently stuck on full-auto mode only, I dare not have it fitted again to have select fire capability for fear that it will be ruined again.

I wanted to fire it free hand (i.e., without the help of a shoulder stock and/or front grip), only using my two hands. I haven't fired any pistol in full auto before, so I decided to take it slow, loading only three rounds into the magazines for every shot. I was afraid that if I load a full magazine, the worst will happen and I will start shooting the ceiling if the recoil was severe. I used my standard shooting settings: 13 meters, SWC-TC reloads.

When I fired the first shot, I was surprised at the violence of the recoil. Since I'm firing a .40S&W round, the recoil of three shots was severe, I could feel a tingling in my right hand. Muzzle climb was severe also: I aimed at the center, and the first shot was at center, the second higher, and the third out of the target board. I shot nine more rounds of three rounds per magazine for a total of twelve, and out of those twelve rounds, only seven hit the target board, two of which hit both ears of the target. I even tried aiming at the bottom of the target to compensate for the muzzle climb, but to no avail.



Lesson learned is you definitely cannot fire full auto using a .40S&W caliber in a compact pistol free hand, and hope to have decent accuracy, at least not at 13 meters. At this point, I decided to take a break, go outside, and buy a Fab Defense GLR 440 Stock. I wanted to see how much control a shoulder stock will give me when I shoot the pistol.

My Fab Defense KPOS for Glock Review Part Three

'FSSG for the KPOS'
My one and only biggest frustration about the KPOS right now, is making an FSSG work on it. First problem, is that you will need a special FSSG (Fire-Selector Switch for Glock) for it, instead of the usually cheaper, flat, sliding or rotary FSSGs that are more readily available. This is because you need a backplate that will act both as an FSSG, and also as anchor for the removable cocking lever. This means you will have to get the rarer, and more expensive variant of the FSSG.

As for installing the FSSG on the Glock: They replace the backplate, and instead of my usual routine of removing the slide from the frame and replacing the backplate, you needed to replace it while the slide is still attached to frame. This is because the FSSG is bulky, and if you install it on your slide and slide it to your frame, it will snag with some of the frame's protrusions.

The way to install it is to lock back the slide using the slide release, then replace the backplate with the FSSG. This would also mean that you will NOT be able to disassemble the slide from the frame easily, you will have to remove that FSSG first, before you can remove the slide from the frame.

'FSSG Fitting Problem'
I was able to buy an FSSG from Bro Spitfire, and it needed gunsmith fitting. There is a sword-like protrusion on the FSSG that goes forward and backwards, and it controls whether the gun goes full-auto or not. The depth or distance of this protrusion seems to vary per model, and is built oversized so the gunsmith can slowly file away by trial and error the length of that protrusion. So what the gunsmith did was file it down a little, assemble, then test by firing a couple of rounds off.

The second problem was that the Gunsmith didn't turn out to be very familiar with the product, and made a crucial mistake: He got confused on when the FSSG was supposed to go full, or semi-auto. So he put the gun on extended or full auto settings, and then filed it down to semi-auto. The result: The FSSG won't go full auto anymore.

My Fab Defense KPOS for Glock Review Part Two

'Burris Fast Fire II'

The generic Taiwan HUD I was using was giving me a bit of a headache after using it, I think its because they used some sort of a low-power laser for the dot, and I was worried it might be doing some long-term damage to my eyes. So I decided to replace it with a branded one. I chose the Burris Fast Fire II as it is a low-profile sight, and fits well with the low overall profile of the KPOS.

I bought it online, and the unit arrived in an ordinary, unmarked box, not in the original manufacturer's box. It was generously wrapped in bubble wrap to ensure safe and proper transport. It came with a spare battery only, and despite not having any manual with it, I was able to find instructions in the internet on how to replace the battery.

I read in the internet that these Burris scopes are made in the Philippines, and it was confirmed when I saw in the battery well prominently marked saying, "Made in the Philippines". I wonder which local electronics company is making this? 

My Fab Defense KPOS for Glock Review Part One

My experience with the Airsoft EMA Roni Carbine Conversion Kit for Glocks was so positive, that I went out and bought the Fab Defense KPOS Carbine Conversion Kit for my Glock 23. Going to get rid of my other firearms, and am ready to go Glock-crazy.

There were two things that convinced me to by the KPOS instead the Roni; First is that the clearance of the KPOS over the ejection port of the Glock was much wider and lower than that of the Roni. This means less or none of the stovepiping issues I found with the Airsoft Roni.

Second was the fact that the muzzle tube of the KPOS is much bigger and allows for more room for the muzzle blast of expand, unlike the much more enclosed space of the Airsoft Roni's muzzle tube, which resulted in flame damage to the muzzle of my Glock's slide.

This picture shows the kit's clearance over the ejection well

This pic shows the muzzle clearance to the pistol

I bought the unit for P32k at Armscor, and it came with the following items:
- Large, black polymer case with gray foam lining;
- Carbine conversion unit;
- Special rear back plate for use with the KPOS;
- Tool for rear plate removal;
- Manual;
- Under the arm sling;