The Mossberg 590S is a 12-gauge pump-action shotgun built for shooters who need genuine versatility without compromise. Unlike standard shotguns locked into one shell length, the 590S cycles 1.75", 2.75", and 3" shells—individually or mixed in the same magazine—letting you load for the shot at hand rather than the other way around. This model features an 20" barrel topped with adjustable ghost ring sights, M-LOK compatible forend, and matte blue finish, making it equally at home on the clay range, in the field, or for home defense.

Mossberg engineered the 590S around three key innovations: a redesigned elevator, new bolt slide, and energy-absorbing bumper that work together to chamber and fire whatever shell length you load. That means no fumbling with different shotguns for different jobs. The platform retains the 590's legendary reliability—dual extractors, twin action bars, positive steel-to-steel lockup, and an anti-jam elevator keep the gun running smooth through thousands of rounds. The top-mounted ambidextrous safety is within thumb reach from either shoulder, and the magazine clean-out tube with cap makes field maintenance straightforward.

With the 20" barrel, you're looking at 13+1 capacity with 1.75" shells, 8+1 with 2.75", or 7+1 with 3" magnums. That's real flexibility for hunting, sport shooting, or tactical use. The ghost ring sight setup gives you a fast, repeatable aiming platform that works across all load types—no rezeroing required. If you shoot a lot of different shotgun disciplines or need one gun to handle multiple purposes, the 590S removes the excuse to buy two.