For the ultimate in shooting flexibility the 590S Series cycles 1.75 2.75 or 3 shells. Pick one shotshell length for specific shooting needs or simultaneously load any combination of those shell lengths. The choice is yours with the 590S. Features standard Mossberg Pump-Action Features: Dual extractors twin action bars positive steel-to-steel lockup and anti-jam elevator provide smooth operation. Other features include top-mounted ambidextrous safety matte blue metal finish magazine clean-out tube with cap and a logo-engraved receiver. - Optic-Ready - Compact and Adjustable Length of Pull (12-13) - Cycles 1.75 2.75 or 3 shells interchangeably - No need for mini shell adaptor - Redesigned Elevator Bolt Slide and a new Energy-Absorbing Bumper - Standard features include dual extractors twin action bars steel-to-steel lockup and ambidextrous safety - Gauge 12 Gauge - Action Type Pump-Action - Chamber Size 3 Chamber with 1.75 Short Shell 2.75 and 3 Cycling Capability - Usage Security - Barrel Length 18.5 - Barrel Finish Matte Blue - Choke Cylinder Bore - Capacity 5+1; 6+1; 9+1 - Length 37.75 - LOP 12-13 - LOP Type Adjustable - Sights Bead; Optic-Ready - Stock Synthetic (Black) w/ Spacer - Weight 6.75