Compact, dependable and built for smaller shooters, the Mossberg 50485 510 Mini is a youth/compact 20-gauge pump that’s ready for first hunts, training or tight-space shooting. With an 18.5″ blued barrel, 3″ chambering and a 3+1 capacity, this right-hand model pairs the proven Mossberg pump action with a fixed (spacer-adjustable) black stock so young shooters get a comfortable length-of-pull as they grow. Rugged, simple to operate and easy to maintain — great as a starter gun or a compact home/field shotgun.

  • Model: Mossberg 50485 (510 Mini)

  • Gauge: 20-gauge

  • Barrel length: 18.50″

  • Chamber: 3″ (accepts 2¾″ and 3″ shells)

  • Capacity: 3 + 1 (three in magazine tube, one in chamber)

  • Action: Pump / slide-action

  • Finish: Blued metal

  • Stock: Fixed black synthetic stock with spacers

  • Hand: Right-hand configuration

  • Sights: Simple bead front sight

  • Weight: ~5–6 lb

  • Choke: fixed