Just looked at a Colt Car-15. It is an early SP-1 style with metal collapsable stock and 16" barrel. The upper has no forward assist. Ser# puts it in the early SP-1 range. Seller wants $1500 for it with an early Colt 4X AR-15 scope. Is this a decent price? The seller is the original owner and bought the rifle in the late 60's. Of course no box or paper work with it but he says he will give me a letter stating pre-ban rifle status. The rifle is at least 99% and looks unused.