I got mine in last friday, and used it for play on saturday.
It got a TON of looks and positive remarks from the crowds.
the only thing I have added to it so far is a stock, and a magpul rail on the side to mount my replay camera.
As for quality, etc...
It's very solid. I have taken it apart and put back together several times. and it's good to go! - The stock/shim did need some electrical tape as noted in the instruction sheet, but otherwise it is rock solid.
It's very straight forward no nonsene in it's simplicity.
The only addition that would have been a nice bonus would have been to include rails in various lengths to attach to it if so desired. (Hint: use Magpul)
will post pics in other thread later