An StG 44 would fetch a lot of money in the collectors market, yet are most often found in the hands of dirt poor militiamen (and women) in Africa and the Middle East. One was recently photographed in the hands of a Syrian rebel.
US Army also found Sturmgewehrs in Iraq, complete with ammunition headstamped 1944 and 45. Click the "and women" link for a ammo quartermaster's nightmare.