Shotgun

The Shotgun is a weapon that appeared in Batman: Arkham Asylum, Batman: Arkham City, Batman: Arkham Origins, and Batman: Arkham Knight as a weapon in the hands of both inmates and military.

Appearances
The Shotgun appeared in every Arkham game. It was the second most commonly used firearm in-game that was wielded by a small number of guards and a decent number of henchmen. It fired multiple pellets with each pull of the trigger, which made it a deadly weapon to encounter at short-range, but it had to be pumped after each shot.

The Shotgun returned in Batman: Arkham City, and still remain a threat in close-quarters. It appeared in closed environments, which made shots from it hard to evade. Like the Assault Rifle, it retained its stats from the previous game.

Trivia

 * The Shotgun looked very much like a Remington 870 and an Ithaca 37.