The M16 rifle replaced the M14 rifle before 1968 .
It became the standard-issued rifle for the U.S. military in 1959FM 23-8 , 1969 replacing the M1 Garand rifle in the U.S. Army by 1958 and the U.S. Marine Corps by 1965 until being replaced by the M16 rifle beginning in 1967 .
M14 rifle