This malfunction has the Army inspecting its M4s and M16s

Army Times: The Army is investigating after an unintentional firing of an M4A1 carbine while its selector switch was moved between “semi” and “auto.”

The problem has affected at least 881 carbines, and it requires adding a function check on all converted M4A1s and modifying shooter immediate action drills.

The U.S. Army Tank-automotive and Armaments Command sent out its first safety message on March 26, noting the selector switch firing.

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