This new Beretta A400 Xplor Unico shotgun fires the 12 gauge shell. It has a 28" blued barrel with a green anodized receiver, and checkered stock & forearm. This semi-auto shotgun is the latest & greatest from Beretta. The A400 Xplor is a hybrid of the best features of the 391 and the Xtrema, with several improvements thrown in for good measure. With a redesigned gas system you can go much longer between cleanings. This shotgun feels like a 391, but is a little lighter than its predecessor. This shotgun comes with 3 chokes, choke wrench, oil, and hardcase. It can shoot the 2 3/4", 3", or 3 1/2" shells. It holds 2 + 1 rounds.