One of the guys on my team has this and I had the chance to use it for the first time today. I thought he kept it from me for five months because he was embarassed, but he was actually just hogging it, because this monster had a shockingly high ROF with the stock battery, and his 9.6v boosted it to about 1500rpm at full charge! That, plus a good handle scope lets this thing completely mow down your opponents at extreme range like nothing I've ever seen before, except in the Echo-1 614, but I think this has a little bit better range to it.
High ROF (About 1100-1200 with stock battery, maybe a little less)
Good Accuracy (Can hit a head-sized target at about 160 feet consistently, depending on your aim)
High Potential for Sniping (Slap on a carry-handle scope and a barrel-mounted bipod and you're all set)
Feels Good to Hold (That's what she said!)
Can Take a lot of Abuse (Now of course, don't run over it with your hummer or something)
Stock feels like it will be the first thing to fail on the gun when worst comes to worst. But this is easy to replace compared to some other things that could go wrong.
Weight balance is very front-heavy, which may get annoying after a while. Mounting the scope will help offset it a little bit.
The semi auto on the one I shot sometimes shot 2 or 3-shot bursts, which is generally bad, but since the actual M16a2/a4 shoots in bursts, some may like this.
Rating: [5 of 5 Stars!]