I recently put the BSA panther scope on my AR-15 and am actually pretty impressed with it. I am not a BSA fan but this scope is pretty nice for like $139 at cabelas.

I would also really take a look at the Mueller scopes they have excellent reviews. I just put the 4-16 X 50 Sport Dot on my 300 Remington Ultra Mag. I think they are the best scopes out right now for the money. Check them out you won't be dissapointed.

The AR with the BSA Panther