 Regardless any anecdotal beliefs and despite the popularity of the story—which persists to this day—there are no verified cases of an enemy using the "M1 Ping" sound to their advantage up through the Korean War.Unfortunately, despite the several advantages the Johnson Rifle design had over the M1 Garand rifle, the existing disadvantages were too great to change US rifle production from the M1 Garand.The Johnson's short recoil reciprocating barrel mechanism resulted in excessive vertical shot dispersion that was never fully cured during its production life, and was prone to malfunction when a bayonet was attached to the reciprocating barrel (short recoil weapons require specific barrel weights to cycle correctly).