Jeff reported: I used a thousand rounds of this in my mp5 and only experienced two failures. 1 was a failure to eject, the other was a failure to detonate.Buy 9mm ammo along with other pistol ammo from major models in the cartridge field. We have now Winchester 9mm Luger Ammunition, Hornady 9mm Luger, Federal Top quality 9mm Luger Ammunition, and s