ok so i am not a gundoc by any means, i am running a 130 spring i think, it is a 20C 1400 mah rating, i dont want to risk taking it apart because i know ill screw something up, but i do know i wanna change the barrel and all that, the guy at toronto airsoft says i need a non ported cylinder to be able to do that, also the gears dont always grind, it seems to be at the end of a game day or near the end that every so often they grind really bad then shoots fine again.
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