The highly effective M72, which fires a 66mm rocket, has been in use since the Vietnam War, but its backblast has created problems when firing from inside enclosed structures.

The Corps may soon field a new version of its disposable anti-tank rocket known as the M-72, a weapon system that has seen service with the Marines since the Vietnam War. Manufactured by Norwegian ...

The M72, the first version of which entered U.S. military service in the early 1960s, is also a single-shot shoulder-fired weapon, but fires a smaller 66mm rocket.