The Beam is a 2 man figher with a unique design. It is built on a Long thin frame, hence its name. The relatively simple design elements and small amount of material makes the ship very inexpensive so almost any group or faction can afford to buy them in bulk. In fact the minimum to buy is 5. During is high point, about 100 years prior to the trade federation invasion of Naboo, Beams could be found in almost every space fleet.
P.S. I know the pilots' heads are sticking out of the canopy but thats cus its too hard to adjust the minifigs in LDraw so I just left it they really would fit though in real legos.