Heckler & Koch HK43


The Heckler and Koch HK43 is a semi-automatic rifle based upon the Heckler & Koch HK33 rifle and is the predecessor of the Heckler & Koch HK93 semi-automatic rifle.

Overview

In the mid to late 1960s, Heckler & Koch developed the HK33, which was a scaled-down version of the Heckler & Koch G3, but chambered for 5.56×45mm NATO. The HK33 entered production in 1968. In 1974, a semi-automatic version of the HK33 was introduced by H&K and was designated the HK43. According to H&K’s numbering nomenclature, the “4” indicates that the weapon is a paramilitary rifle, and the “3” indicates that the caliber is 5.56 mm.
A HK43 version KA1 with a shorter 322 mm barrel was used in 1977 by the German RAF terrorist group to assassinate general attorney Siegfried Buback and two policemen. Verena Becker, another former RAF member, has also claimed Wisniewski was the killer.