Capable of cycling 1-3/4", 2-3/4", or 3" shells with no adapter necessary, the Mossberg® 590S® Optics-Ready Pump-Action Shotgun delivers peerless versatility and modern optics compatibility. Pick one shotshell length or load any combination of shell lengths – the 590S can handle it all. Plus, the receiver is milled to accept a Shield® RMSc-footprint optic of your choice. Other features include twin action bars for smooth cycling, dual extractors, positive steel-to-steel lockup, and an anti-jam elevator for smooth operation. Polymer stock and forend. Top-mounted ambidextrous safety. Magazine clean-out tube with cap. Cylinder bore choke.

• Capable of cycling 1-3/4", 2-3/4", and 3" shells without an adapter
• Receiver accepts a Shield RMSc-footprint red dot sight
• Twin action bars for smooth cycling
• Polymer stock and forend
• Positive steel-to-steel lockup
• Dual extractors
• Anti-jam elevator
• Top-mounted ambidextrous safety
• Cylinder bore choke