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  1. T

    Huben Huben GK1 magazine play

    Hi everyone. I had to disassemble my GK1 and now the magazine can be slightly rotated half a chamber back and forth when it's locked. The gun shoots so it's not really an issue but before it was rock solid when the lever was pushed in. I want it to operate perfectly as it was. Can anyone tell me...
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    Tuning Power issue with my FX Impact mk2

    Hi, I have have a highly modified FX Impact mk2. Slug kit, Dual TP, stronger hammer weight and spring, 72cc powerplenum. It has the 700mm barrel on it. So I am trying to get 40 grain slugs to go at 1000fps but even on 170 bar reg pressure the max is 920fps. Got the weaker valve spring without...
  3. T

    Tuning Power issue with my FX Impact mk2

    Hi, I have have a highly modified FX Impact mk2. Slug kit, Dual TP, stronger hammer weight and spring, 72cc powerplenum. It has the 700mm barrel on it. So I am trying to get 40 grain slugs to go at 1000fps but even on 170 bar reg pressure the max is 920fps. Got the weaker valve spring without...