Very different, it's all anodised/powder coated like a real firearm so the tactile feel of the parts is much nicer, the amount of actual steel in it makes it quite weighty too. The main difference though is the 1:1 'real steel' dimensions, fat AEG motor grips and off-size hand guards etc have long bothered me, this doesn't have any of those issues.
Plan is to fit a new rail and stock... Expect an update in the 'pictures of your guns' thread soon.