The Panzer Arms M4 Tactical 12-Gauge is a semi-automatic, gas-operated shotgun heavily modeled after the iconic Benelli M4. It utilizes an identical ARGO (Auto-Regulating Gas-Operated) dual-piston system, offering shooters a reliable, tactical platform for home defense or competitive shooting. GOOD CONDITION NO BOX BLEMISHING ON RECEIVER AND BARREL (SHOWN IN PICTURES) Barrel Length: 18.5 inches Overall Length: 40 to 45 inches (depending on the stock configuration) Weight: ~7.5 lbs empty Caliber/Gauge: 12 Gauge Chamber: 3-inch (accepts both 2- 3/4" and 3" shells) Action: Semi-automatic, ARGO gas-piston system Capacity: 5+1 rounds standard (tube extensions are widely available to upgrade capacity) Chokes: Threaded barrel featuring an interchangeable choke system