Genuine U.S. Vietnam War era M16/M16A1 XM3 bipod with storage case, new old stock. Metal bipod with sprung mechanism to attach to the M16 barrel. 4th pattern nylon case has two snap fasteners to top securing the bipod, Alice clip to back, replaced the cotton 3rd pattern case late 1960's and continued to be used in the 70's & 80's.