Hop-up rubber for HFC M9 GBB
HFC full metal GBB M910-
Are all hop-up rubbers interchangable?
If not then what and where from should I be buying?
I know the HFC is a carbon copy of the TM M9 and seeing as my hop-up rubber is toast I had just those few questions. I need to get this thing fixed! Thanks
Dave Horton
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