I have the 9c and it has had no problem with +P. I looked at a Walther PPQ to replace it and decided not to. Have 400 rounds through it and most of the issues have been the cheap range ammo. All but one round have fired when re-loaded into the magazine and gun. I have never had a problem with self defense ammo, and have about 100 rounds of a couple different manufactures fired through the gun.