|The P7 series history is difficult to describe, given that the most detailed history that I have of it comes from a book written in German. What is plain from what I can translate, is that the genesis of the P7 series comes from a squeeze cocking design by a Chicago based gun designer named Allan W. Woodruff in 1918! The patent drawings are the first photos below. Helmut Weldle, now retired after a long career at HK, headed the design team for the PSP, or Polizei Selbstlade Pistole. It was the first P7, so to speak, and was the basis for all subsequent design changes made to the more familiar P7 models to follow. |
Prior to the design of the readily recognizable P7, the squeeze cocking design was tried on other pistols, the HK4, and a Colt 1911. HK4, serial number 9999, (the first production HK4 had a serial number of 10000), was tapped to adapt the squeeze cocking design, albeit from the rear of the grip rather than the front.