ATI S-Beam Shotgun, Pump, 12 Gauge, 18.5" Barrel, 4+1 Rounds Built for reliability and value, the ATI S-Beam MB3-R 12GA Pump Shotgun is a dependable home defense option packed with features. Outfitted with ATI's DuoSight red dot optic and a Picatinny rail system, this shotgun is ready for fast target acquisition right out of the box. With an 18.5" barrel, 4+1 capacity, and rugged synthetic furniture, it delivers solid performance at an unmatched price. ATI DuoSight optic included Crossbolt safety Picatinny top and forend rail Synthetic stock with recoil pad