Charles Daly N4S, Semi-automatic, Bullpup, 12 Gauge, 3 Chamber, 18.5 Barrel, Matte Finish, Black, Front/Rear Flip Up Sights, 5 Rounds, 1 Magazine/Benelli)- M 930.318 The Charles Daly Defense N4S Bullpup Shotgun features a 18.5 inch barrel with a Modified Beretta/Benelli Mobil Choke, chambered in 3 inch 12-gauge. It has front and rear flip up sights and comes with a 5 round magazine.