I got the G&G Combat Machince M4 raider a little over a year and a half ago. It's done great so far. I did upgrade the motor, gears, spring, and spring guide because I want a faster rate of fire and more FPS, not because the broke. Overall really good I would recommend it.
Low FPS for Outdoors
Low Rate of fire (12 bbs per second) out of the box (with a 9.6)
Comes with high cap (I don't like high caps, but it's pretty decent for a HC)
Rating: [4 of 5 Stars!]