The Igelstellung type Defense Grid System was a Photonic Weapon system. Utilizing advanced computer tracking systems, and power distribution systems the Igelstellung is capable of developing a 'class 1 defense screen'. A class 1 Defense screen is capable of tracking and engaging incoming projectiles, fighters and capable of damaging larger craft at range. The standard range of the Igelstellung was under 200 kilometers but they could engage larger targets up to 150,000km at a far hindered accuracy.