Abstract: An ammunition bearing unit is provided. The unit includes at least three casings. When the ammunition bearing unit strikes a target, the casings are deformed and make successive electrical contacts. A detecting unit is arranged to detect a time difference between the successive electrical contacts created by the deformation of the casings. The detecting unit generates an initiation signal only if the time difference exceeds a selected value. An ignition system sends a signal to a charge as a function of the electrical contacts.

Abstract: An ignition system for an ammunition-bearing unit includes at least two casings, an inner and an outer casing, which are arranged to at least partially surround each other and are intended to undergo deformation upon striking a target and thus establish electrical contact, and a detecting unit for detecting when electrical contact is established and for, upon actual striking of the target, emitting at least one initiation signal for triggering the charge of the anmunition-bearing unit. At least one of the casings includes plurality of sections which are spaced around its periphery and which are electrically insulated from each other and, upon deformation of the casings establish an individual electrical contact with the opposite at least one part of the at least one other casing.