Heckler & Koch HK 4
Overview
HK 4
Left side view of HK 4 pistol with .380 ACP rounds alongside.
Source: www.en.valka.cz -
© copyright lies with original owner
Alex Seidel and Tilo Müller
France - MAS
Description
Introduction
The HK 4 is a pocket-size pistol of German origin. It was the first pistol to be produced by Heckler & Koch. The name HK 4 was derived from being available in four calibers. It also was one of the first modular designs, being convertible to each of the four calibers.
Design
The HK 4 has some features of the Mauser HSc but is different in many aspects. The HK 4 is a double action pistol that uses the straight blowback principle. Besides for the grip plates the pistol is fully made out of metal. An internal slide stop mechanism is fitted, which disengages by inserting a magazine. Fixed iron sights are used for aiming.
Firepower
The HK 4 is a semi-automatic pistol and was available in four calibers. Most were produced in .380 ACP and 7.65mm Browning. The other two options are .25 ACP and .22 Long Rifle. In .380 ACP the magazine holds 7 rounds, in all other models 8 rounds.
Users
The HK 4 was mainly sold as a civilian pistol, some with a four barrel kit. As a service pistol it was adopted by the German police. About a quarter of the total production went to the German police.
Details
Media
HK 4
HK 4 with its three additional barrels and examples of its four possible calibers.
Source: www.hkp7.com
Copyright: copyright lies with original owner
HK 4
Exploded view of HK 4 pistol.
Source: www.germanguns.de
Copyright: copyright lies with original owner
HK 4
Cut away diagram of HK 4 pistol.
Source: www.handguns.g00net.org
Copyright: copyright lies with original owner
HK 4
Left side view of HK 4 pistol.
Source: www.world.guns.ru
Copyright: copyright lies with original owner
HK 4
Right side view of HK 4 pistol.
Source: www.world.guns.ru
Copyright: copyright lies with original owner
HK 4
HK 4 in box with four caliber conversion kit.
Source: Resm
Copyright: GNU Attribution - Share Alike license
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The larger H&K P9 was designed as a more capable weapon for law enforcement and military use than the HK 4.