Nirai .50AS

In-Game Description
''As a response to the increasing number of pirate attacks, a new type of weapon was developed that is especially well-suited to eliminate smaller groups of opponents while also presenting an inexpensive alternative to bombs. The projectiles have an approach sensor that ignites an explosive charge of plasma when activated.''

Trivia

 * The name suggests this weapon fires 50 calibre ammunition, which is strange for the game's setting. However, it is the type of ammo used by some gatling guns.
 * This is the only scatter gun that has a stated ammo type.