Back in 1999, the United States military wanted a new joint service combat shotgun. They had numerous requirements for the new shotgun. They wanted semi-automatic operation, the ability to add optics without affecting reliability, and obviously, it needed to be a 12 gauge.
The Marines were tasked with leading the competition, and in the end, they chose the Benelli M4 Super 90 shotgun. It would be christened the M1014 Joint Service Shotgun, and the M1014 arrived just in time for the Global War On Terror.
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The Benelli M4 was the first Benelli to move away from the famed inertia system the M1, M2, and M3 utilized. The ARGO system, in particular, was quite revolutionary. This dual gas piston design required very little maintenance and eliminated the need for linkages which simplified and lightened the design.
The Marines were tasked with leading the competition, and in the end, they chose the Benelli M4 Super 90 shotgun. It would be christened the M1014 Joint Service Shotgun, and the M1014 arrived just in time for the Global War On Terror.

The Benelli M4 - The Marines Fighting Shotgun
The Benelli M4 Super 90 is the fighting shotgun of choice for the United States Marine Corps and can be your fighting shotgun of choice.

The Benelli M4 was the first Benelli to move away from the famed inertia system the M1, M2, and M3 utilized. The ARGO system, in particular, was quite revolutionary. This dual gas piston design required very little maintenance and eliminated the need for linkages which simplified and lightened the design.