airsoft highspeed M4 with mosfet

quick demonstration of my cqb gearbox for my cqbr. im not totally sure what its shooting as far as speed goes but if i did my math right, it should be at around 335fps. this video gives a good idea of how active breaking works in your gun-espeially in these highspeed guns. i do not however reccomend them because they, the wires, and the motor get hot very quick. the commutator and brushes on the motor will take a beating as well so if you plan on using AB and 11.1, make sure you know how disassemble a airsoft motor to polish the comm as well as resurface and polish the brushes.

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[fanofCOH]

@054792austin shs 7 steel tooth piston. i use it in every built except for my m150+ builds! this particular piston ran in a 50rps/300fps build for 3 months and is still going strong. i highly reccomend them!

[054792austin]

nice bps what piston are you using?