According to what I've read in a book by Gangarosa (The Walther Handgun Story), the German police commission had a requirement that guns submitted to them for acceptance pass a 10,000 round service test. The P5 easily passed this test due to the fact that it has the hardened hexagonal cross-pin which reinforces the alloy frame. And "...P5s used in West German police service frequently fire more than 20,000 rounds with no evidence of frame cracking." From what I gather, standard European 9mm is loaded hotter than U.S. stuff, so I don't think a few hundred rounds of U.S. +P would hurt the pistol much.--Leigh