A weapon and ammunition carrier for a gun (3) has a housing (1) which is pivotal about an elevation axis (2) to elevate the gun (3). A magazine (8) for ammunition is provided in the housing, and a loading tray (22) is disposed in the housing between the magazine (8) and the gun (3). The magazine (8) is located behind the rear recoil position of the gun (3) and has upper and lower levels. The upper magazine level is configured to hold projectiles (9) in such a manner that the middle projectile (9) is aligned with the axis of the gun barrel (4), and the lower magazine level is configured to hold propelling charges (10). The magazine (8) is provided with a projectile ejector (11) and with a propelling charge ejector (21), with the projectile ejector (11) also serving as rammer. A catching and holding device (12), which can be released in response to operation of the projectile ejector (11 ), is positioned at the rear recoil position of the gun (3) to releasably lock the gun (3) in the rear recoil position while a projectile (9) is rammed in. A recuperator (26) then axially advances the gun (3) from the rear recoil position to the firing position. The loading tray (22) is disposed at the height of the lower magazine level to receive the propelling charges (10), and is equipped with a parallelogram suspension (23) by means of which the loading tray (22) can be pivoted into position to load the propelling charges (10) into the gun (3).