The Model SB is a golden version of the Double-Barrel Shotgun. It does deals more damage and has better knock-back than the normal sawed-off. It only has 1 bullet and is chambered with Shells on pickup. It has a distinct noise after firing. The name and location is a reference to the game Square Brawl.
LOCATIONThe Model SB is found at the Large Cubes at the north edge of the map.