Mossberg 590A1 Mil Spec 12 Gauge Synthetic 20" Barrel With Ghost Ring Sight is a Mossberg pump-action shotgun chambered in 12 Gauge from the 590A1 family. The 590A1 is Mossberg's heavy-duty pump-action platform, with a heavy-walled barrel, metal trigger guard and safety, and rugged 590-series construction.
- Product type: Pump-Action Shotgun
- Model family: 590A1
- Gauge / caliber: 12 Gauge
- Barrel length: 20 inches
