I already have a Rock River carbine. I guess I'm a little different in my ideas of the AR. The original design of the AR-15/M-16 was to have a lightweight rifle (7-8 lbs) and the ammo for the rifle was lighter and took up less space. That's what I like, a lightweight carbine.
Somewhere along the way, people started adding all kinds of accessories and hanging all kinds of stuff from their rifles. Now these rifles with all the "improvements" have made some of these rifles weigh 10-12 lbs, maybe more. What happened?
The M&P Sport looks like a lot of rifle for the money. I'm not going to a jungle to fight and I don't need to protect a mall so I just want a plain ol' carbine.