This is a classic example of high G&G quality and durability. I've been running this on stock parts for over a year and still no problems. Shoots at a good 350 FPS, great range, and great rate of fire with a 8.4v 3800mAh Ni-Mh Tenergy large-type battery. It's extremely tough. The stock was run over by a Jeep and not so much as a dent or scratch on it. With upgrades such as a tight-bore 6.03 barrel and better hop-up, this would be even better. I absolutely love this gun. With the combination of power and rate of fire, it makes a great field gun, and has that classic M16 feel. If you buy G&G, expect good things. 5 out of 5.
Good battery space in the stock
Non-functioning charging handle
No RIS rails
Solid stock (matter of preference)