EVERYTHING!!! This gun rocks. I played in freezing cold weather and had no breaks. My friends tippman broke the balls like I had never seen before. I was able to out perform his gun. The zero gravity barrelis a good barrel for waremer weather but in the colder weather your gonna need a different bore size. The expansion chamber works great I stay within 2 to 3 fps each shot.
Nothing as of right now. The gun works and looks awesome.
This gun is a great gun. The spyders and tippmans come nowhere close to the performance of this gun. It is easily field stripped and put back together. If you have the money get this gun!!!