What I need is a genuine, or exact copy of the Vietnam-era (nylon-web) OD sling I'm most familiar with. I cannot find a "M" designation for the sling, but it's the earlier one with the spring clip for the forward sling swivel, and an adjustable tensioner-clamp for the butt end. Used to be a dime-a-dozen in the surplus stores, but I cannot find them. Like this... http://ee.ar15.com/uploadImages/20090615/148979/Uploaded_633806914079160000_File.bmp Thanks. WAYNO.