![]() ![]() The barrel uses polygonal rifling, instead of the more conventional lands and grooves. ![]() There is one very major advantage though the barrel on the pistol is fixed and does not move, which translates into a very accurate pistol: The second problem is that P7s do tend to have more felt recoil than 9mm pistols that use the vastly more common Browning-type method of delayed blowback. It’s a clever idea, and it works well, however it does suffer from two flaws: the first is that you have to use jacketed bullets, otherwise bits of the bullet can be shaved off and lodge in the gas port. By the time the pressure dissipates, it is safe for the slide to open, and the ordinary functions of ejecting the cartridge case and feeding a new round into the chamber take place. This pressure prevents the slide from opening violently, a problem with straight blowback 9mm pistols, especially compact ones. Upon firing, expanding propellant gases flow into this hole under pressure, and bear against a piston that rides under the barrel and is attached to the slide. In terms of operation, in front of the chamber is a small hole. However, there is nothing a German engineer likes more than a challenge! H&K solved the problem by using a method of operation known as gas-retarded blowback, as far as I know the first pistol to successfully use it. The German police specifications called for a compact 9mm pistol, which was quite a novel idea for the time, and the manufacturers competing for the contracts had difficulty coming up with something short enough that would work reliably. Like the SIG-Sauer P225, the P7 was designed in the mid-1970s to compete for German police contracts, the German police realising after the disaster of the Munich Olympics that they needed to start taking their guns a bit more seriously. So where do I start this review? Probably best is to tell you where the impetus for the P7 came from. Although it is not the world’s most popular pistol, the P7 is quite likely the most innovative pistol design marketed since World War 2, incorporating a heap of features that although not entirely original, have never before been successfully incorporated into large-scale manufacture. a whacking great chunk of ordnance steel, machined into a very high quality firearm. To my mind, the H&K P7 is to pistols what the Thompson is to sub-machineguns, i.e. ![]()
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