my biggest fear is that the gun will have a low ammo capacity, and a barrel similar to that of the Umarex 416, which was a barrel hidden inside a sleeve. this gave the semblance of a heavy barrel, but in reality it wasn't. IIRC, it used an o-ring or something to prevent internal barrel wobble.
Im really hoping for a heavy barrel on this gun and at least 30 rounds in the mag.