• Auto-regulating gas-operated (ARGO) system
• Comes standard with a Picatinny rail for optics
• Marine-tough reliability under the harshest environmental conditions
The Benelli M4 Tactical shotgun has a unique auto-regulating gas-operated system. It features dual stainless steel, self-cleaning pistons located just ahead of the chamber and operate directly against the bolt assembly. It’s a simple and dependable system that eliminates the complex linkage, springs and heavy parts that other semi-automatic shotguns have to depend on.
Gauge Chamber Length Barrel Length Overall Length Magazine Capacity Weight 12 3″ 18.5″ 40″ 5+1 7-1/2 lbs.