I have searched until my eyes went wonky, but I still have a question. I am looking at a couple of 116 flat top, non-accutrigger, rifles with blind magazines as potential action doners. They are both online, so I really have no way to look closely, but is there some way to tell if they are CF or SF by looking at the outside of the gun or serial number? I would like for my build to have a DBM when it is done, so it would be handy information to have. Thanks in advance.

Allan