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From the manufacturer of the K1 Rifle, comes the GK1 Semi-Auto Pistol. Production has started on this gun and is expected sometime in 2023. Unlike the rifle, this pistol does not come silenced, but will come with 1/2 x 20 thread so that you may add a moderator after the fact. We carry a full array of moderators that can be found by clicking here. Moderator brands include:
  • DonnyFL
  • Evanix
  • 0Db
The GK1 will be available in .177, .22, and ,25 calibers, and has a built in magazine. Although some pictures have circulated showing a synthetic grip, as of this moment, there is no information whether they will be produced at a later date. At this time, the GK1 will only have a walnut grip set.
HUBEN TESTING
  • This test was done using Predator GTO .22 Lead Free 11.75 grain pellets.
  • Test began at 12 MPA with steady shots
  • Air was then added up to 30 MPA adjusted the same way with 3 shots at the end of the test.
  • Test was done using half turns on the power setting.
  • This can be seen at the beginning of the test with the graph showing clearly, the half turns made to go from 369 FPS up to 745 FPS. You can also see the air pressure added at the 813 FPS and then the gun being turned down in half turns from the 813 FPS to 490 FPS.
  • This demonstration displays the consistency of the gun and it predictability upon firing.
  • Test was also done in an enclosed indoor environment.
SPECIFICATIONS
Barrel

Caliber

Velocity Max

​
Safety

Cylinder Pressure Max

Cylinder Capacity

Magazine Type


Magazine Capacity


Power

​
Powerplant

Scopeable

Grip

Front Sight

Rear Sight

Max Shots Per Fill

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​Dimension

Weight
Huben Warranty
210mm (8.26)

.177, .22 (5.5mm), .25 (6.35mm)

.22 cal - 918 fps @ 18 gn and .25 cal - 836 fps @ 25 gn

Manual

35PPa (5000 psi)

85cc

Non-removable, Auto-rotate

.177 (?)
.22 (19 shot)
.25 (17 shot)

Adjustable, 6-45J (4.4 fpe to 33.2 fpe)
​ .22 cal - 4.5-33 ft-lb and .25 cal - 4.5-40ft-lb

PCP

11mm dovetail

Walnut

Adjustable for elevation

Adjustable for windage

.22 Caliber:
45 shots at Lowest Power (pellet - 1.175g (18.1gr), velocity - 230 m/s (755 fps), pressure - down from 30MPa to 10MPa)
.25 Caliber:
30 shots at Lowest Power (pellet 2.2g (33.95gr), velocity - 220m/s (722 fps), pressure - down from 35MPa to 12MPa)
​
325x160x50mm (12.79x6.30x1.97")

​1.2kg (2.65 lb)
huben_airguns_warranty.pdf
File Size: 129 kb
File Type: pdf
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