Before this gets locked, I might as well throw my 2 cents in.
Range - About 120 feet. Nothing out of the ordinary.
Accuracy - When you are in range, this thing is a tack driver for a stock gun. They come with a 6.04 mm tightbore barrel pre-installed, so it doesn't surprise me too much.
Reliability - I've been running mine like an AK, and it hasn't crapped out on me yet. I've crawled through dust ridden canals, trudged through muddy hills and rain, and the thing STILL works. It's been 2 years of heavy use, and so far the only thing I've had to replace is the hop up bucking.
HOWEVER, I will note that some of my buddies had some issues with the long version of the m4 desert raider in regards to the motor and piston, which is basically the same gun internally. I've also heard from the local airsoft shop that the recent batches being shipped have had some QC issues, but I'm not sure if that is a local occurrence or one that spans the US.
Either way, I think it's a pretty good gun for the price.