Unboxing the Sweetest HK P7 Ever Let’s talk about a 100-percent ambidextrous, semi-automatic, striker-fired pistol from the Cold War. Oh, and while we’re at it, let’s toss in the fact that it’s a 9mm blowback that uses a gas-delayed recoiling system. The HK P7 PSP is a perfect blend of German ingenuity made to meet a moment in history. That moment was 1972 at the Olympic Games in Munich, where 7,134 athletes from around the world gathered to compete. Tragedy unfolded as the entire world watched terrorists from the now infamous Black September group kill two Israeli athletes and take nine others hostage. The remaining hostages were eventually killed as the German police attempted to seize control of the situation.