The Benelli M3 is a dual-mode shotgun designed and manufactured by Italian firearms manufacturer Benelli Armi SpA, and the third model of the Benelli Super 90 line of semi-automatic shotguns. The M3 holds a maximum of seven rounds and uses Benelli's proprietary inertia-driven action system first showcased in the M1. The M3 is notable for allowing the user to choose between semi-automatic or pump-action operation.

The Specialist Firearms Command is the firearms unit of the Metropolitan Police. The Command is responsible for providing a firearms-response capability, assisting the rest of the service which is not routinely armed.