No external moving parts is pretty nice.
Very easy to strip apart
I've only had one or two parts ever break in the 3 years i've owned the gun
The gun works better than other guns in cold weather
the trigger shoe fell off the very first day and has been lost ever since
ACI has horrible customer service
Very innacurate with the original bolt and barrel but a lot of guns are
hate the plastic grip and wish there were more upgraded trigger frames for it
Balls get clogged in the powerfeed and don't go in sometimes
Its a good starter gun because its easy to understand and the cocking mechanism is one of a kind. It is very reliable and looks great. But it has many flaws and given a chance to go back i wouldn't have bought this gun and maybe spent the extra 100 for a nicer one.