||Ordered this airsoft rifle a few months back, and I have to say that it is an exceptional rifle! Mine actually came with 4 rail covers instead of only two, which I was pretty happy about (I don't use the extra two, because I have a grip on bottom rail and keep forgetting to put one on the top).
The rail system is very solid; I've found mine to have VERY little wobble. It's the smallest step from no wobble at all. The rifle has a very sturdy construction, the stock moves into position and stays there without any trouble (mine came with two types of butts to cover the end; more options at no extra cost).
Also found the gun to be very accurate, and shoots extremely fast right out of the box. Anyone who purchases this AEG should have no regrets with this product.
Nice, solid weight.
Durable full metal rail system / stock
None I've had unless you absolutely can't stand the smallest amount of rail wobble.
Rating: [5 of 5 Stars!]