S205 Close Assault Weapon System

"I don't mind the S205, but it just doesn't have that feel you get from a nice, old-fashioned pump action."

- Anonymous

The S205 Close-Quarters Combat Weapon System (known alternatively as the S205 CQCWS or the S205 Shotgun) was a bullpup combat shotgun introduced by Robinson Tactical Arms Corporation in 2572. It would be adopted en masse by the United Nations Space Command Marine Corps and to a lesser extent by other branches.

Design
The design of the S205 was one that some may have confused with a standard rifle at first glance; it features a detachable box magazine and a semi-automatic firing capability, a major change between the model 205 and its predecessor in role, the M90 series shotguns. It's magazine stowed a total of six twelve gauge shells in the standard size, though others sported a capacity of either four, eight, or twelve rounds.