The Revelation Model 310C is a pump-action shotgun chambered in 20 gauge with a 28-inch barrel. Sold historically as a house brand by Western Auto, Revelation firearms were manufactured by O.F. Mossberg & Sons and are structurally identical to the popular Mossberg 500 series. Specifications & Design Action: Pump-action Gauge: 20 GA Barrel Length: 28 inches Choke: Typically fixed full choke (depending on specific production run)Capacity: Internal tube magazine Sights: Bead front sight Stock: Wood stock and forend Manufacturer Origin: Made in the USA by Mossberg for Western Auto