Sometimes you need a little less gun, but a lot more bullets per minute. Sometimes, bulk, wood, and long barrels just aren't the most suitable for traversing the cramped quarters of a Nuka-Cola factory, or the damp confines of a raider and scorpion-filled cave, or a raider and scorpion-filled Nuka-Cola factory. We all know that American Pre-War assault rifles are the greatest peace-keepers of the wastes and homefront alike, though sometimes you need to bring that fight to closer quarters.
