Semi-automatic, or autoloading shotguns are the most modern and technologically advanced shotguns on the market. Like other types of shotguns, autoloaders are highly versatile firearms.

Most every Benelli semi-auto shotgun is inertia-operated—the M4 uses a gas ... For example, the Beretta A400 is a 7.8-pound gun versus the SBE3, which weighs only 7.2 pounds. That may not seem like a ...