Ran across a Bushmaster Carbon-15 at a gun show last weekend. Polymer upper and lower, 16in barrel, collapsable stock, bushnell red-dot scope, total of 5.5lbs and all for under $700. Although I am morally opposed to direct gas impingement operating systems, at that price point and light weight, I'm kind of intrigued.
It's hard to tell from the reviews, a lot of them tend to be of the 'polymer is bad' variety but little substance beyond that. Anyone have any experience with one of these?