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 Glock 23 Review Part Four

'Better Shooting'
Went to the shooting range to test my Glock using the NY1 Trigger Spring, 3.5 lb. Connector and Tungsten Guide Rod setup. I used new, Semi-Wad Cutter Full Metal Jacket (SWC-FMJ) rounds labeled as +P rounds, and I'm guessing they were the standard 180 grain bullets. Distance was 13 meters, 100 rounds were fired and no malfunctions were found.

Pic below is using the left hand, 50 rounds

Pic below is using the right hand, also 50 rounds


I definitely shot better using the NY1 Trigger and 3.5 lb. Connector setup. My groupings were tighter, and the difference between my left and right hands were not so obvious anymore. The smoother and lighter break of the setup was easier to shoot, though I still used slow fire (3-5 seconds between shots) method as I still didn't trust myself to shoot as well firing at a faster rate.

The trigger still feels like a two-stage trigger, but it did not affect my shooting, obviously. I guess I will be staying with this setup, and just mess around with the Striker and Striker Block Springs if I am going to lighten further that trigger break.

'Tungsten Guide Rod and Recoil'
My only complaint with this shooting session, was the recoil. I found it to sting my hands a lot more so now than in my first shooting session. I got the feeling like when you hit a solid object with a steel bar, and the bar sorts of vibrates and transfers that vibration into your hands. It felt very much like that. It got so bad that after the first 50 rounds, my hands started shaking a bit. I tried to rest it out, but the shaking took a bit of time to dissipate, and I wonder how I was still able to shoot well despite that. Thanks perhaps to the Glock's fast lock time.