NEW MK46A1 TRIGGER FRAME FOR THE M249, MK46 FULL AUTO MACHINE GUNS THAT TAKE AR15 TYPE PISTOL GRIPS. MADE FROM 7075 T6 ALUMINUM, TYPE III HARDCOAT ANODIZED MATTE BLACK . THIS ONE IS COMPLETE WITH ALL PARTS, DROP IN AND GO SHOOT. THESE HAVE A BUILT IN ENLARGED TRIGGER GUARD FOR WINTER MITTS USE.