Abstract: A weapon bolt assembly includes a bolt portion including a recess; a firing pin unit including a striker plunger axially slidably received in the recess and having an axially measured length and a firing pin attached to the striker plunger. The firing pin unit has a first position in which the firing pin projects from the bolt portion and a second position in which the firing pin is situated in its entirety within the bolt portion. A firing spring is disposed in the recess and has a relaxed state and a stressed state. In the relaxed state of the firing spring and in the first position of the firing pin unit a clearance is defined between the two components. In the stressed state the firing spring exerts a force on the firing pin unit urging it into its first position. The axially measured length of the firing pin unit is such that in the second position the firing spring remains in the relaxed state.