The Stoner 63 machine gun is one of the most powerful U.S. military weapons platforms you may never have heard of. Developed by AR-15/M16 designer and small arms legend Eugene Stoner and Cadillac Gage in 1963, the Stoner 63 mainly saw combat in the hands of Navy SEALs during the Vietnam War. Only 4,000 of the 5.56mm modular weapons system were ever produced.
But at the height of its limited use, the muscular machine gun “added to our firepower like no other weapon could have,” according to retired SEAL Lt. Cmdr Michael J. Walsh, who appears in a newly surfaced mini-documentary The Stoner Machinegun: A Navy Seal Remembers. “Once you got used to it and you fell in love with the weapon, you never really carried anything else.”