Is This the U.S. Military’s Ultimate Weapon? MK 47 Grenade Launcher: The U.S. Military’s Ultimate Weapon? Kris Osborn · January 19, 2019 Please leave this field emptyStay Updated with Warrior Maven Subscribe for daily military news and updates delivered straight to your inbox. We don’t spam! Read our privacy policy for more info. Check your inbox or spam folder to confirm your subscription.