A barrel weapon (1) has a barrel (2) in which for the purpose of monitoring the loading chamber temperature a temperature sensor (14) is provided in a recess (12) of the wall (13) of the barrel and in the zone of the loading chamber (2). The temperature sensor (14) comprises a thermo-element, a resistance temperature sensor or a semi-conductor temperature sensor connected by electrical conductors (15) to an electronic evaluating system (16). The temperature sensor (14) and the connecting leads are located in the recess (12) and embedded using a grouting compound (21) which is finished flush with the outer barrel surface. <IMAGE>
