Action: Pump – Gauge: 20 – Capacity: 6 – Chamber: 3 – Barrel Type: Vent Rib – Barrel Length: 22 – Sight: Dual Bead – Choke: Accu-Set – LOP Type: Fixed – LOP: 13 – Barrel Finish: Blued – Stock Finish: Wood – Weight: 6.5 – Length: 40.75 – Shell Size: 2.75 – After over 50 years and over 10 million and counting and the only pump action to be declared MilSpecthe Mossberg 500 has proven to be one of the most versatile and reliable shotgun platforms available offering a model to fit every application and every user from our households to law agencies to military worldwide.Built Rugged. Proudly American. – A statement that truly sums up the 500.After over 50 years and over 10 million and counting and the only pump action to be declared MilSpecthe Mossberg 500 has proven to be one of the most versatile and reliable shotgun platforms available offering a model to fit every application and every user from our households to law agencies to military worldwide.