New Benelli M4 EXT 12 Gauge 18.5" ARGO Dual-Piston 7+1 FDE Semi-Auto Shotgun

New Benelli M4 EXT 12 Gauge 18.5" ARGO Dual-Piston 7+1 FDE Semi-Auto Shotgun

The Benelli M4 EXT 12 Gauge 18.5" is a combat-proven semi-automatic shotgun built around Benelli’s patented ARGO (Auto-Regulating Gas-Operated) dual stainless-steel self-cleaning piston system. This configuration features an 18.5-inch barrel, 7+1 capacity, and chambering for 2¾" and 3" shells. Finished in Flat Dark Earth (FDE), it includes a factory-installed Picatinny rail for optics, protected ghost ring rear sight with windage adjustment, and a durable front post sight for rapid target acquisition.

Additional features include an enlarged bolt release, aggressive charging handle, pistol grip stock with telescoping functionality for adjustable length of pull, and a robust steel receiver for long-term durability. The ARGO system is engineered to deliver reliable cycling across a broad range of loads while reducing fouling in the action. With its military-adopted design, enhanced controls, and extended capacity, the Benelli M4 EXT stands as one of the most rugged and specification-rich semi-automatic 12 gauge platforms available.