I don't know who is really making them. However, I'm sure someone knows or it's already been posted somewhere.
I think I would find out the real maker and see if they sell the same weapon cheaper. I think you may be paying a mark-up for S&W to put their name on it.
If they're the same price, then maybe I would go with the Smith.
From what I've read/heard they are gun weapons. Price seems fair for a good AR these days. However, the options really can change the price a lot.