This is my first and probably my last airsoft gun. Build quality is brilliant, the whole gun is very solid. Don't be put off by the folding stock, it does have a slight wobble (This is universal), but overall its very good quality, when folded it has all the pros of a sub-machine gun, but with the range of a normal assault rifle. Talking about range and accuracy, out of the box, it is the most accurate gun around.
The only problems I have found are, the battery is a bit fiddly when putting it in, you have be careful when putting a single point harness on as this can break the rear sling mount, the front one is much stronger so use a normal sling and the price will put a lot of people off, however its worth every penny.