For the ultimate in shooting flexibility, the Mossberg 590S Optic Ready Pump Action Shotgun cycles 1.75a ^2, 2.75a ^2, or 3a ^2 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. FeaturesOptic-ReadyCycles 1.75", 2.75" or 3" shells interchangeablyNo need for mini shell adaptorRedesigned Elevator, Bolt Slide and a new Energy-Absorbing BumperStandard features include dual extractors, twin action bars, steel-to-steel lockup and ambidextrous safety