|HK33 had been developed by the German company Heckler und Koch in mid- to late 1960s as a scaled-down version of their G3 battle rifle, and entered production in 1968. HK33 was developed for then-new cartridge, 5.56x45mm (.223 Remington), and while it had not been adopted by German military, it saw significant use by some West Germany police and security units, and also widely exported, and used by Malaysia, Chile and Thailand armed forces. Since 1999, HK33 also manufactured under license in Turkey. HK33 is still in production in Germany by HK, and also served as a platform for further developments, such as G-41 assault rifle and HK53 compact assault rifle (known by the HK as submachine gun).
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HK33 is a delayed blowback operated, selective fire rifle, that utilized two pieces bolt with two rollers that used to delay bolt blowback. The receiver is made from stamped steel, and HK33 is available with either a polymer fixed buttstock (HK33A2) or retractable metallic buttstock (HK33A3). Carbine version of the HK33 also available and featured shorter barrels and similar fixed or retractable stocks (HK33KA2 and HK33KA3, respectively).
All HK33 variants available with different trigger units, with or without 3-rounds burst mode. HK`s proprietary claw-type mounts allow telescopic sights to be mounted on any version of HK33. Full-length HK33s can be equipped with bayonet or underbarrel 40mm grenade launchers, HK79A1, also made by Heckler & Koch. Full-length HK33 rifles also can launch rifle grenades from combined muzzle compensator/flash hider. All HK33 and HK53 guns are equipped with drum-type rear sights.
HECKLER & KOCH GmbH P.O. Box 1329 D-78722 Oberndorf, Germany
5.56 x 45 mm M198 or NATO
940 mm (740 mm with retracted stock in A3 variant)
6 grooves, rh
25, 30, 40 rounds
Rate of fire: