Weapon pack

Soldiers of the Church of the Papal Mainframe wielded firearms with detachable weapon packs. During the Battle of Demons Run, after the Eleventh Doctor tricked the Colonel Manton and the headless monks into attacking each other, the colonel disarmed his weapon pack and ordered his soldiers to do the same as a show of good faith to the monks. Once they were unarmed, the Doctors' forces teleported in. (TV: A Good Man Goes to War)