I've had this gun for some time and played a few games with it. So far its been a great gun with some minor issues. Currently using it with the Turnigy 5000mAh 2S1P 7.4v 30C hardcase pack which works great but had to get a converter from bullets to deans and solder on some deans to the gun. Never had to worry about recharging or reloading the gun. While the fps and rof may not be first class, I find it's strengths in its adjustable ROF for when you want to conserve ammo or spray down suppressive fire and the large magazine.
As for some advice, get a nice big durable battery like I did because it will be sitting in that mag pouch with the mag box and it will get banged around a bit. Also get a sling, the gun itself has 2 nice slots for one on the front and end of the gun and weighing 10-15lb you'll tire out carrying it around.
Some of the issues I've encountered with the gun is that the flash hider is a pain to get off. The magazine pouch can shift around depending on how tight you make the fabric straps that attach the pouch to the gun. Sometimes the battery shifts and can hit the mode switch on the magazine causing it to go from auto-wind to continuous-wind in the middle of a game (which could probably be solved by sanding it down. Also the auto and continuous labels for mine was backwards). Another thing is the handle on top isn't good, I wouldn't advice using it for more than just picking up the gun because it jiggles a lot and looks like it could snap easily. The hop-up is difficult to adjust without first loosening the front barrel and shifting it forward a bit, but you shouldn't need to adjust it more than once. Another thing is the hose that attaches the mag to the gun is twisted on and is impossible to take off without spraying BBs everywhere while the mag is wound. The gun side of the hose can also become loose alloying it to shift and be pulled out slightly.
Massive magazine capacity
Rate of Fire adjuster
Never need to wind
Magazine is a pain to take off (but can be refilled while attached)
No fake bullets (battery wires would get in the way anyway)
Somewhat loosely attached magazine pouch
Heavy (not ideal for run and gun)
Rating: [4 of 5 Stars!]