United States Navy Mark 14 Enhanced Battle Rifle (Mk 14 Enhanced Battle Rifle, improved combat rifle ")-an American automatic rifle, created the special operations forces of the United States NAVY based on the M14 rifle. Used by several special units, including the NAVY SEAL. The main differences from the M14: new Lodge (development company Smith Enterprises), telescoping Buttstock, pistol grip, a few planks Picatinny and some "business" components, such as new precision barrel and gas cylinder.