Mossberg 590 Retrograde 12 Gauge Pump Shotgun with Minishell Adapter, 18.5-Inch Barrel
The Mossberg 590 Retrograde blends classic 1960s styling with modern utility. This full-size 12 gauge pump comes factory-fitted with walnut furniture and a heat-shielded 18.5-inch cylinder-bore barrel, then upgraded with a universal Minishell adapter and enhanced magazine follower. The result is a reliable defensive or sporting shotgun that accepts 1.75-inch short shells while retaining the rugged build that made the 590 series a staple for military and law-enforcement contracts.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
What’s Included
- Universal Minishell adapter (installed)
- Aftermarket magazine-tube follower kit (installed)
The factory matte-blued steel receiver and barrel pair with dark-stained walnut furniture for a period-correct look that still resists harsh use. A ribbed corn-cob forend offers positive grip during rapid cycling, while the vented recoil pad tames full-power 2 3/4- or 3-inch loads.
The installed Minishell adapter lets the action feed 1.75-inch shells reliably, increasing capacity and reducing recoil options without permanent modification. An upgraded follower further enhances feeding smoothness and visibility when clearing the tube.
An 18.5-inch barrel with perforated heat shield dissipates heat during extended sessions and keeps the shooter’s support hand protected. The cylinder-bore choke provides consistent patterns at typical defensive distances, and a brass bead front sight delivers a simple, durable aiming point.
Controls remain intuitive: the tang-mounted ambidextrous safety is easy to reach from either shoulder, and the heavy-wall barrel and dual action bars maintain the 590’s reputation for strength. With its compact length of pull and sling studs already in place, this Retrograde is ready for duty, range time, or classic display.