The Benelli M4 semi-automatic shotgun has served ... and the lack of any linkages between the parts helps minimize weight. The company designed it for the Marine Corps in 1998, it was adopted ...

Benelli’s M4 has been in service with the U.S. military ... The self-contained gas system not only requires fewer operational parts, it is also self-cleaning. For many of the same reasons ...

As a result, the M4 was the first of Benelli’s shotguns to employ its ... This self-contained gas system requires fewer operational parts—a total of four—but is also known for its self ...