I've put about 50,000 rounds through this gun and have upgraded it many times.
Feels solid, reaches pretty far for a stock setup, and exceeded my expectations for such a cheap gun.
Very front-heavy, but I like that.
It's a big gun, but an M16 is just as long. This one feels better, more solid, and looks MUCH sexier than any M16 or M4 variant.
The plastic parts are nice and thick, and it has plenty of metal where it counts.
The only thing I haven't upgraded in this gun is the cylinder, the gears, the trigger wiring, and the gearbox shell. I've put a Mosfet in (built by myself using the IRF1324 and IRF4905), new battery, motor, piston, piston head, shims, bushings, spring, wiring (somewhat), hopup bucking, barrel, and nozzle. What a wonderful upgrade platform this gun is!
-Works great out-of-the-box: Runs 340-355fps, 11rps with stock everything, .2g bbs.
-Upgraded to a Madbull Black Python 6.03, m120 spring, Guarder/5KU/Matrix (they're all the same) High Speed motor, 7.4V 2150Mah 25C LiPo, and everything else I mentioned above, it shoots 405fps with .25g bbs at 21rps.
-Put in a Mosfet and semi-auto becomes unbelievably crisp (the braking Mosfet stops the motor right when the shot goes off so you get crisp, consistent semi-auto shots)
-Very easy to field-strip: 3 metal pins and you're done!
-Large battery compartment, so you can hold 11.1V 500Mah Lipos in there with ease
-Uses 7mm nylon bushings as stock (size is right, material is wrong)
-Jams very easily with crappy ammo (hence why I got a new piston; it stripped the front three teeth right off when it jammed
-Comes with too much thick grease in the gearbox
-Poor seal between the nozzle and hopup chamber (but excellent seals everywhere else!)
-Although it has a 14mm CCW thread for the flash hider (I might put a mock silencer on to extend the barrel and get a 590mm inner barrel to make this into a DMR), it's glued on so tightly that you have to soak it in boiling water to get it unscrewed; even then it's very difficult to take it off
Rating: [4 of 5 Stars!]