This 9mm ammunition is built to be fired in modern-day 9x19mm (9mm) firearms. Q: 9mm - 124 gr Hydra-Shok JHP - Federal Regulation Enforcement - fifty Rounds Is that this a +P round? Posted On: 2/eleven/2013 By: Al M A: Federal hasn't formally classified this like a +P round. While some firearm brands recommend from the usage of +P ammo of their gun