Abstract: Arrangement for interconnecting a projectile and a projectile extension component. The projectile and the extension component each incorporates its own connecting element which are capable of being introduced into each other by causing one of the connecting elements to be so deformed as to be retained in its deformed state in the second connecting element. The connecting elements are capable of being introduced into each other with the help of the firing forces whose effect is immediate when the projectile and the extension component are fired from the barrel of a weapon.

Abstract: Mortar ammunition with a projectile body and a tail tube containing the necessary propellant charge. The tail tube and the projectile body constitute two separate components which, for the purpose of being loaded into the mortar, are capable of being lowered in turn into the mortar via its barrel until they come into contact with each other inside the barrel. When the mortar is fired the projectile body will leave the mortar without taking with it the tail tube. The projectile body and the tail tube make contact with each other via a girdle fixed to the tail tube, said girdle being caused by the gases from the propellant charge to become detached from the tail tube and to become securely attached to the projectile body, so that the girdle is carried out of the barrel by the projectile body.