I also had one a few years ago that kept braking. The older ones had better externals than internals. In fact, I was so mad I swore to boycott ICS for life. Over the last few years however, I've read several claims that they've corrected former problems. This and the affordable price of the MOD 5's finally wore me down enough to give them another shot, and so far, I don't regret it. I've had it since Febuary, probably have 2k rnds through it, and not so much as a hiccup. The old one's are easy to spot. The new one's have a heat sink motor plate, the old one's don't. Also, they have a slotted motor mount screw, while the old one's have an allen screw. And last, the new one's no longer have a Special Weapons Inc. logo.