With an adjustable synthetic stock, the Mossberg 510 Mini Super Bantam 20 Gauge All-Purpose Field Pump-Action Shotgun features dual extractors, twin action bars, positive steel-to-steel lock-up and an antijam elevator to deliver smooth, reliable performance. The ventilated-rib barrel offers great heat dissipation, and at just 5 lb. this lightweight shotgun is easy to carry and lets you draw your shots quickly. Dual bead sights.