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[GHK] What kind of BB are you using with your GHK AK?

What kind of BB are you using with your GHK AK?

It does seem my GHK GKMSU is VERY VERY picky about the brands of BB that I'm using.   So I'm just wondering if it's an isolated problem about my gun or this is a very generic problem for all GHK AK?

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I think the problem is that the shop changed it to Prowin metal Hop Up Chamber which seems to be rather picky about the BB.   I'm gonna try switching to A+ inner barrel + hopup and see if it's any better.

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I think the problem is that the shop changed it to Prowin metal Hop Up Chamber which seems to be rather picky about the BB.   I'm gonna try switching to A+ inner barrel + hopup and see if it's any better.

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