The Kel-Tec KSG shotgun is a revolutionary 12-gauge bullpup pump-action shotgun. In case you didn’t know, a bullpup shotgun is one where the action is situated behind the trigger group. The Kel-Tec KSG contains two magazine tubes that allow a person to manually switch between them in real-time. Each magazine tube can hold seven shotgun shells that are 12-gauge and 2.75 inches long. If you are using 3-inch shotgun shells, then each magazine tube can hold six of them. This can certainly hold a lot more ammunition than a classic shotgun which only has one magazine tube. The people who use the Kel-Tec KSG are generally those who like to shoot a lot of ammunition and don’t like to waste too much time with reloading.