F.E.A.R - Unique Weapon "Street Turret"

http://fear.wikia.com/wiki/Street_Turret "To obtain the weapon, the player must open the command console by pressing the "Talk" key (default: T), then type the command gimmegun turret_street and press Enter. This will only work if the player is not holding any other guns, so the first three inventory positions must be cleared by pressing the "Drop Weapon" key (default: B) prior to entering the code."