 From the scene where Theo gets off the train in the beginning, many  of the service rifles carried by the British armed forces are the  XM8 rifle from todays era. The rifle is considered experimental  today, with the program canceled in 2005 between US Defense  Department and the rifles manufacturer, Heckler & Koch. The XM8 was  intended to replace current US M16/M4 variant service rifles by  2015