i definitely will never believe that until the official gun stats are published by a PC-version owner. when using FMJ on the intervention i dont get 1 hit kills any more often than before. you can also test it yourself, i guarantee that if you put FMJ on one class and no FMJ on another class, the gun would take the same exact amount of shots to kill on any given body part. why do you think the extended mag challenge is to get 40 PENETRATION kills?