[blueb8llz]

my friends and me have been into the hobby for bout 5 years now and we upgrade our own guns.
to tell you the truth, theres no need for a brushless motor. these motors have plenty speed and torque as it is.
and i never ever had to replace the brushes and its still as powerful as day one. only thing you needa change is the spring overtime.
but if you want more speed and power, its not the motor you want to replace. you need stiffer spring, metal piston, metal gears, etc...i can give you a list if you want.
and if your serious about airsoft, dont buy that brand you linked.
the only brand airsoft gun you should get is Tokyo Marui and then Classic Army.
let me know if you got further questions....oh and i got plenty websites to order from...mainly from hong kong, but i think i got some sites from united states but its a lil more expensive.
heck, i got a mp5 i would think of selling if your interested. upgraded and ready to rock shoots a very high rate of fire too and super accurate!