I would like to be this thread a little Stock for Penetration Tables for WWII Guns, so that everyone can look up some data to the diffrent guns and refer to it if need be. Percentage bonus armor penetration makes a big difference on targets who build armor items, but will do nothing against base armor. Lethality is a new statistic introduced in Season to replace flat armor penetration. All champions have 0 base armor penetration, but it can be increased with items , runes , and some champion abilities. To which penetration propability is this tested?