Mossberg 590A1 Retrograde 12 Gauge, 20 Inch Heavy-Walled Cylinder Bore, Ghost Ring Sights, Parkerized, 3 Inch Chamber (SKU 51665)
The Mossberg 590A1 Retrograde (SKU 51665) pairs proven 590A1 duty features with classic walnut furniture. This configuration brings a 20 inch heavy-walled cylinder-bore barrel with a perforated steel heat shield, full-length magazine tube to the muzzle with bayonet lug, and fully adjustable ghost-ring sights. Parkerized steel components, a matte black hard-anodized aluminum receiver, and a 3 inch chamber round out a build known for durability and control.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Specific Condition Notes: There are visible markings and areas of significant surface rust from previous handling and use. Refer to the photos for a close look at finish and markings.
What’s Included
- Owner's manual
- Blue Force Gear Vickers 2-point quick-adjust sling (installed)
- Mossberg factory cardboard box (SKU 51665 label; box marked Tactical)
This Retrograde model features walnut furniture with a checkered stock and ventilated recoil pad, paired with a walnut corncob forend. The traditional wood complements the parkerized steel and matte black receiver for a purposeful, period-inspired look with modern internals.
The 20 inch heavy-walled barrel is cylinder bore and topped by a perforated steel heat shield. It is chambered for 3 inch shells. The full-length tubular magazine runs to the muzzle and includes a bayonet lug. Capacity is 8+1 with 2¾ inch shells and 7 with 3 inch shells.
Target acquisition is fast and precise with the fully adjustable ghost-ring rear sight with protective wings and a ramped front blade featuring an orange insert. Length of pull is 14.0 inches, and the ambidextrous tang safety is easily accessed from either hand. Sling hardware includes a fixed front sling loop integral to the bayonet-lug/magazine band and a rear swivel stud in the stock, and a Blue Force Gear Vickers quick-adjust sling is installed.
Receiver markings read "M590A1" and "MOSSBERG - NORTH HAVEN, CT U.S.A. - 590 12 GA." Steel components are parkerized for corrosion resistance, while the receiver is matte black hard-anodized aluminum. The factory box carries the Tactical designation on the label, matching this SKU 51665 configuration.