Description

The Mossberg Retrograde series evokes classic pump-action shotgun styling with walnut furniture and a vented heat shield over the barrel, reminiscent of early trench and tactical designs. The 510A1 Retrograde builds on Mossberg’s rugged 590A1 platform — known for its military heritage and durability — with a 20-inch heavy-walled barrel and protective heat shield for a traditional look while maintaining robust construction and field-oriented features.

Specifications

• Series: Mossberg 510A1 Retrograde
• Action: Manual pump-action shotgun (slide action)
• Gauge: 12 gauge 
• Chamber: 3″ chamber (accepts 2 ¾″ and 3″ shells)
• Barrel Length: ~20 inches 
• Barrel Type: Heavy-walled barrel with vented heat shield
• Barrel Finish: Parkerized / matte corrosion-resistant look
• Capacity: 8 + 1 rounds 
• Choke: Cylinder bore (fixed)
• Sights: Ghost ring rear sight with high-visibility front 
• Stock / Furniture: Walnut stock and forend with checkered grip (classic wood finish)
• Safety: Top tang ambidextrous safety 
• Magazine Tube: Tube magazine with clean-out cap for maintenance
• Receiver: Drilled & tapped for optics mounts
• Overall Length: ~41″ with stock extended
• Length of Pull: ~13.87″ (fixed stock)
• Weight: ~7lbs.