Mossberg 590A1 Retrograde 12 Gauge, 20 in Barrel, 7-Round Tube, Ghost Ring Sights, Walnut Stock, Heat Shield
The Mossberg 590A1 Retrograde blends the proven 590A1 platform with classic walnut furniture and duty-focused features. This 12-gauge pump-action model features a 20-inch barrel with a perforated steel heat shield, a full-length 7-round magazine tube, and adjustable ghost-ring sights. It is chambered for both 2-3/4 in. and 3 in. shells and includes a bayonet lug, ambidextrous top-tang safety, and front and rear sling attachment points.
Condition
Overall Condition: As-new condition with no signs of prior handling beyond what’s typical from inspection (see photos).
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Specific Condition Notes: A few very mild signs of handling wear are present from light inspection.
What’s Included
- Heritage gun case
This Retrograde configuration highlights walnut furniture with bordered checkering on the buttstock, a ventilated Mossberg recoil pad, and a ribbed corncob forend. The 14 in length of pull delivers a traditional fit while maintaining confident control under recoil.
Sighting is handled by an adjustable ghost-ring rear paired with a wing-protected front blade featuring an orange insert for quick indexing. Controls are familiar and accessible, with Mossberg’s ambidextrous top-tang safety. Sling attachment points are installed at the rear and at the magazine tube end cap at the muzzle.
The 20 in barrel wears a perforated steel heat shield, and the full-length magazine tube runs nearly flush to the muzzle for a 7-round capacity. A bayonet lug is integral to the forward magazine/barrel band, reflecting the model’s purpose-built design.
Finished in a matte black receiver with matte gray barrel, magazine, and heat shield, this shotgun is chambered for 2-3/4 in. and 3 in. shells. Receiver markings include "M590A1," and the ejection-port side reads "MOSSBERG — NORTH HAVEN, CT USA — 590 12 GA." Made in the USA, this is the Retrograde series as cataloged under Mossberg part number 51665.