The WY-102 Railgun is a weapon designed for extreme range and is used by Weyland-Yutani armed forces such as Weyland-Yutani security teams and combat androids. However, Corporate mercenaries (Iron Bears) and even the Colonial Marines used the WY-102 in roles of long range fire support and assassination. It fires a super heated slug at extreme velocities that can pierce most forms of body armour and even penetrate thick armour plating of vehicles and structures.