Safety risk requirements for combat pistol and its ammunition

Pistol and its ammunition are considered to be reliable if only a minimum failure occur during the period of use. In a safe pistol and its ammunition, no hazard arises for a shooter, for the pistol and ammunition or to the ambient environment (other persons or objects in the terrain, environment). In other words, in a safe pistol and ammunition, there is no failure which could endanger health or even life of a soldier or which could damage asset or environment.