The HK4 is a historical firearm and marks the beginning of pistol production at Heckler & Koch. In its basic structure and the main manufacturing processes, the HK4 laid groundwork for its much more important and successful successor, the H&K P9S.

Apr 2, 2020 · Heckler & Koch got its start making rifles for military and police use, but the demand for semi-automatic pistols grew in the 1960s, leading to the HK4.

The HK4 is a blow-back operated unlocked-breech semiautomatic pistol with a double-action trigger and an external hammer. Its name is derived from the tool-free interchangeability of the four barrels in calibers 9mm Browning Short, 7.65mm Browning, 6.35mm Browning and …

Sep 3, 2020 · The HK4, which offered the advantage of being multi-caliber, joined Heckler & Koch's early semi-auto hunting rifles and the company's P9 pistol in being the company's first range of imports to...

Jun 15, 2023 · The Heckler & Koch HK4 is a semi-automatic handgun chambered in .25 ACP and 9×17mm Kurz (or .380 ACP). It is the first of the “OG” series of handguns designed and manufactured by Heckler & Koch of Germany. The HK4 was introduced in 1968 and replaced the FN Model 1910 in the company’s catalog.

Discover the innovative Heckler & Koch HK4, a trailblazing semi-automatic pistol that redefined versatility in firearm design. With its unique ability to switch between four calibers – .22 LR, .25 ACP, .32 ACP, and .380 ACP – the HK4 offers unmatched …

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Aug 28, 2019 · The H&K Model 4 was named for the fact that it was offered in four different calibers – .22LR, .25 ACP, .32 ACP, and .380 ACP. The gun came with a complete set of spare barrels and magazines to allow conversion between all of them, and interesting feature not offered by any other pistols like it at the time.

Heckler & Koch offers a range of high-quality firearms with a commitment to excellence in design and performance.

We want people to be able to live safely. Our products are designed to protect people in free democratic countries from threats and violence. Heckler & Koch is the leading manufacturer of small arms for NATO and EU countries.