This AR has a bull barrel. It also has this rail 2" long on top of the barrel. I tried to turn it over so the rail would be on bottom but you can't because of a gas tube in it. What can I buy so I can put my sling on it? Do I have to buy a quad rail? If I do buy a quad rail how do I know which one fits? Would it be different since this is a bull barrel?


REALTOR with Zeriss Realty