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Upgrading a G&G m4
So i got my G&G R4 Commando and was looking to upgrade the internals. I'm looking for about 380 FPS and Good compression and accuracy.
I was looking at getting a G&P metal hop-up,
Madbull 6.03 363mm inner barrel,
Modify Pistion head Cylinder head and nozzel,
Prometheis m110 spring
and a sorbo pad
but then i thought is that all really needed and thought to check here first any input is welcome Thanks
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