Benelli M4 H2O Features Engineered for demanding use the M4 H2O's dual-piston ARGO system self-regulates across light and heavy loads without manual adjustments keeping cycling consistent and maintenance low. The compact 18.5 barrel enhances maneuverability while retaining pattern performance and control in close quarters. Purpose-built for durability the Titanium Cerakote finish protects critical metal surfaces from salt and abrasion. A ghost-ring rear sight with an adjustable front post a full-length top Picatinny rail and ergonomic controls make the M4 H2O optics-ready and mission-capable out of the box. Benelli M4 H2O Specifications Manufacturer: Benelli Model: M4 H2O Gauge: 12 Gauge Action: Semi-auto (ARGO gas) Barrel Length: 18.5 Chamber: 2-3/4 3 Capacity: 5+1 Receiver Finish: Titanium Cerakote Barrel Finish: Titanium Cerakote Stock Finish: Black Synthetic Sights: Ghost-ring rear / adjustable front Rail: Top Picatinny Overall Length: 40 Length of Pull: 14-3/8 Drop at Heel: 2-1/4 Drop at Comb: 1-1/2 Weight: 7.8 lbs Hand: Right Hand