This generations successor to the XP 270 and the great XP 70 has alot of popular guns to live up to... This gun, unlike her predecessors, does not have a seperate compression chamber, dispite the cosmetic appearance of a ball at the front. My first observations thus far show that she is underpowered (and mine leaks a little), and not as well built, but given that, not really that bad of a gun. More of this review coming soon.