Armscor VRBP100-A Bullpup, Semi-automatic Shotgun, 12 Gauge, 3, 20 Barrel, Black Synthetic, Front/Rear Flip Sights, 5 Rounds, 1 Magazine VRBP-100-A The VRBP-100 12ga shotgun offers ideal strength, length, and versatility all in one package. This 5+1 magazine fed semi-automatic bullpup shotgun comes equipped with a polymer stock directly behind the action, making it as compact as possible without sacrificing firepower. Chambered for 2 3/4" and 3" shells.