craig Posted June 12, 2012 Share Posted June 12, 2012 for the last two weeks if been build a aeg m4 from the ground up that i have called the "APEX M4c1 ive got most of the externals and some of the internals barrels hop up ect but when it come to the gear box i have no experience of whats good and what's perfect for the aeg and that can work with the ultra high speed motor and a m120/130 spring also if anyone has any other suggestions then let me know Link to comment Share on other sites More sharing options...
bigshep Posted June 13, 2012 Share Posted June 13, 2012 Ultra high sped motor and big spring do not mix. If you want big spring (and fps, as a m130 will be about 420 fps) then you need an ultra torque motor not ultra speed. Apart from that I am f-all help as I like to keep mine as from box until it breaks Link to comment Share on other sites More sharing options...
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