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.

Features and Benefits:

• Optic-Ready (Shield RMSc Footprint)
• 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

Specs:

• Calibre: 12GA
• Chamber: 1.75" , 2.75" , 3" 
• Barrel Length: 18.5"
• Action: Pump Action
• SKU: 51606 
• Chokes Included: Fixed Cyl.
• Stock: MAGPUL GREY SGA
• Finish: Matte