I'd like to get a mil-spec sling, the basic black sling the everyone gets issued in the Army now a days, in trade for my AR hand guards. These are the carbine hand guards, and they have no heat shield. They came off of a Oly Arms pistol cal. upper. If your interested in these hand guards, and don't have a sling to trade, give me 2 days. If I can't find a sling, you can have them for the shipping cost. I also have a Mauser sling to trade.