in the mid1 1950s Eugene Stoner from the armed division of Fairchild aircraft began working on a new option for the US forces the result was the Revolutionary AR10 a rifle with Innovative features a powerful cartridge half a kogam lighter than the M14 easier to control and more maneuverable this was the first rifle with a linear design using a direct gas impingement system and a rotating bolt in 1956 the AR10 prototype competed against the fnfal H and kg3 and the classic Springfield M14 but failed in the test when its Barrel was destroyed Additionally the US Army had already purchased a large number of