NEW MK46A1 FOLDING CHARGING HANDLE. THESE INSTALL ON ANY M249, M249S, MK46, MK46A1 WITHOUT MODIFICATIONS TO THE WEAPON. THE BEST CHARGING HANDLE MADE FOR THE M249 SERIES OF WEAPONRY, NEATLY FOLDS AWAY FOR BETTER CARRYING IN CONFINED VEHICLES, PARATROOPERS ETC. AUTOMATICALLY FOLDS ITSELF WHEN FIRED. COMES WITH NEW SPRING PINS AND INSTRUCTIONS FOR INSTALL. OPTIONAL BLACK, FDE OR ODG FINISH.