The Sport, and the debate of whether or not a carbine course is "worthwhile" in the same thread? Ooh, this should be fun.
Lol, OP, the Sport is a great rifle, you'll likely not be disappointed. Like it was mentioned above, not much of a track record to go on yet with Windham. Where as with the Sport?
It's frikin Smith & Wesson. They do stand behind their gear, and the Sport is no exception.
I've had my fair share of ARs, one of which was the Sport. It was a fantastic weapon, great shooter, would trust it 110%. I have every intention of adding another one to my stash, actually regret selling my old one.