The Heckler & Koch HK33 entered into production in 1963. The HK33 is produced in five variants: 1) with a fixed butt; 2) with a retractable butt; 3) fitted with a bipod; 4) as a sniper rifle with telescopic sight; and 5) as the HK22K carbine version. An “E” added to the weapon’s name identifies models for export, while a “K” added to the end of the weapon’s name refers to shortened models.
