The US Army is having problems with automatic carbines (guns) M4A1, which proved to be unsafe. servicemen found, that their weapons can fire spontaneously when switching the mode of fire, transfers “Warspot” with reference to the Popular Mechanics magazine.
the problem was first discovered in March 2018 of the year, when shooting practice one of the US soldiers videotaped, his M4A1 performs shot without touching the trigger. He tried to switch firing mode with a semi-automatic to automatic, and at this time carbine spontaneously fired. It is also reported, that a month later the same thing happened to M4A1, but from another company, and again there was a spontaneous shot at switching-fire regime on the semi-automatic mode.
It should be recalled, that M4A1 - an upgraded version of automatic rifle M4, which replaced the M16 rifle and its modifications, it is produced by two companies – Colt and FN. Detected a problem was detected in both carbines manufacturers.
To identify this problem have been tested almost 9000 units M4A1, of them 10% appeared with the above defect. Since all test 259 000 M4A1 rifles, joined the army, impossible, the soldiers fired special instruction, helps to identify the defect.
