I’ve been shooting the FAB Defense KPOS G2 a little further on my Glock 17 lately, and I have some follow-up thoughts and findings.
First: it’s not compatible with iron sights that go forward of the rear sight cut, to include many, many of the fiber optic sights out there such as the Tru-Glo TFX. I have not tried it with suppressor sights.
Second: I tried using my Tactical Solutions TSG-22 22lr conversion with it. The conversion sits slide sits low enough that I would be VERY concerned about striking the “compensator shroud”. You could, in theory, remove the shroud to make it work correctly, which might be a viable alternative in some setups. The charging handle mechanism is also a little suspect with it, but it does seem to work. I might experiment with this more later on if I have time.
Third: an extended magazine release helps a lot with this setup. I highly recommend one.
Fourth: it seems like your gun gets very dirty VERY quickly in this enclosure. My front night sight was blacked out after a few magazines of shooting..
Finally: I am still concerned about this gun’s ability to retain a true zero due to the slight up-down movement that you can get with the flexing of the frame. My groups are larger than I would have expected, albeit this is when shooting at 25yds with trash ammo. Now, the truth is, since the front of the gun is latched in pretty good, it might look worse than it is, since the back is going to show a larger flexing due to variance. Still, it’s not what i would call a precision weapon compared to a “real” rifle. It does seem to more-or-less hold zero between taking the gun in and out of the chassis, though.