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 – Mounted Holosun HS407K – 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 – Magpul SGA Adj Stock & MOE Forend – 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 Accu-Choke System – Cylinder Bore Choke Installed – Capacity 5+1; 6+1; 9+1 – Length 38 – LOP 12.25-14.25 – LOP Type Adjustable – Sights Bead; Holosun Micro Dot – Stock SGA Adj Stock/Spacers & MOE Forend (Gray) – Weight 6.75