My GK1 broke, releasing all the air from the magazine despite following the HUBEN recommendation that the pressure not drop below 12 MPa. It was above 200 MPa. Following the instructions, I disassembled it to repair it, and there was still air inside (the instructions don't warn of this risk), and it fired from the butt of the barrel. Fortunately, it didn't hit me. I sent the GK1 to my supplier for repair 10 days ago and haven't heard anything, despite sending emails asking about it. In short, it didn't work properly, the instructions are incorrect, and the after-sales service is poor.Regards
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