[Juke16]

Originally Posted by DustMagnet

If you can find one of these it will take a standard V2 gearbox.

Soft Air M4 AEG Electric Powered Rifle/Spring Powered Pistol Airsoft Field Duty Kit

You can change the hop-up rubber, but you might not be able to change the hop-up chamber.

Also, it is only compatible with its own hi-cap mags (slightly undersized mag well).

You can dremel out parts of the magwell to use normal mags.