I just received my Huben GK1 in .22cal from Kelly at KRAZ Cool Airguns about a week ago. I had great communication with him through email and shipping was fast. Mine is the Version 3 with the factory moderator so I could still use the open sights. I like the extras that Kelly throws in; 3D printed fill probe plug, brass washer for the grip screw, and mag clearing rod.
I have a couple springers in my collection but PCP rifles, mini carbines, and bullpups (somewhat) pique my interest these days. I've just never owned or was never interested in owning a PCP pistol. I actually read the whole 123 page...and counting Huben GK1 thread. I guess this pistol is different. I like the looks of it, ease of power adjustability, "high" capacity mag, and the fact that it's semi-auto with a good trigger.
I also see a lot of aftermarket parts available for the GK1 and more down the pipeline. I like that owners of this platform can make it what they want. It can be turned in to a mini "carbine" or leave it in its original configuration as a pistol. At least we have options.
I like that it's not regulated for higher air capacity. The intended ranges I plan to shoot this pistol at is within 10-25 yards. I'll take a maximum extreme spread (ES) of 30 fps as a baseline. If my unregulated Daystate Regal can shoot dime size groups at 50 yards with a 30 fps ES, I don't think it will be a noticeable difference when I shoot this pistol within 25 yards. If I want better accuracy at longer distances, I have other PCPs in the stable.
Some things I wish could be changed:
- A taller front sight; With the factory Huben moderator, it slightly obscures the front sight. A taller front sight would also allow the use of other aftermarket moderators that are slightly larger in diameter.
- A short picatinny rail in front of the trigger guard to mount a light would be great.
- A redesign of the oddly shaped trigger guard. I don't know. Maybe they just wanted to be different.
- The safe/fire lever orientation; I'm surprised no one has mentioned this in the other threads. With the GK1, Fire is in the up position and Safe is in the down position. With most firearms (semi-auto pistols), it's the other way around which is the correct way. Up position is Safe and down position is Fire. It's more of a safety concern for me that I have to retrain myself on.
One thing for sure is that I never saw myself spending this much on a PCP from Chinuh. I guess I gave in.
I only had time to run it through the chrony, adjust the sights, and do a few groups. I have it set up for JSB 18.13gr at 637fps average, 16.26fpe with 1 full turn CCW from zero on the power adjustment screw. I can get 2 magazines (38 total) from a 270 bar fill with ES of 27fps. I forgot what pressure it ended at. When I first shot it at zero turns out of the box with the Huben moderator, this thing is super quiet at 397fps/6fpe. I could only hear the mag rotating and I started to laugh in amazement.
Shot this off-hand at 10 yards unsupported. My eyes ain't what it used to be lol.
View attachment 466699 I then proceeded to empty the remaining 9 shots from the mag on to my steel plate at 22 yards off-hand, unsupported. I might have to adjust the rear sight to the left a little.
View attachment 466700 Trigger pull comes in at 14.2 ounces, average of 3 pulls. The funny thing is that when I first took the pull weight measurement, it doubled like I bump fired it lol. If you don't have a firm grip on this pistol and the trigger is set too light, it will double.
View attachment 466772 So far, I'm liking this gun. I still have more testing to do with different ammo and power settings when time permits. For reliability reasons, I'll be sticking with pellets and no slugs for me. A lot cheaper too. Just my thoughts.
View attachment 466773
