I have this one,enjoy it from august 2014. My mg42 has following: 525 fps, ~1200 rpm.
11v battery,high torque motor. And this stuff i have without changing barrell=)
P.s. also i made custom upper gearbox for higher fps than 525 and custom hop-up chamber for good compression. And i use airnozzle from G36 (25 or 26mm).
If someone interest in this way, i can write a normal review for this stuff.
There is no comercial in this post. =)
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