The HK21 is a German 7.62 mm general-purpose machine gun, developed in 1961 by small arms manufacturer Heckler & Koch and based on the G3 battle rifle. The weapon is in use with the armed forces of several Asian, African and Latin American countries.

We have taken all the original 21 German design and updated with the latest HK-E upgrades. These upgrades have dramatically reduced recoil and increased reliability. TSC has researched extensively to bring you the finest HK21E conversion available in the world today.

Feb 14, 2022 · HK21E - Modernized HK 21; general purpose machine gun; belt fed; chambered for 7.62x51mm NATO round; export model.

Oct 26, 2020 · This had a longer receiver, longer barrel, strengthened receiver, improved recoil buffer, and was fully modular, able to be assembled into a model HK11, 21, or 23 (that is, magazine fed 7.62mm and belt fed in either 5.56mm or 7.62mm).

Dec 1, 1998 · Experimental 5.56x45mm NATO HK23 Light Machine Gun with linkless feed system. Holding 150-rounds, this system required no link belts and was charged using M16 stripper clips. Photo courtesy of HK.

Introduced in 1961, the HK 21 was a groundbreaking achievement in the field of automatic weaponry. Built on the reliable foundation of the G3 battle rifle, the HK 21 was designed as a versatile, belt-fed machine gun capable of adapting to a wide range of combat scenarios.

The HK 21 is belt fed and fires the 7.62x51mm NATO round. The cyclic rate of fire is about 900 rpm. Unlike many machine guns the HK 21 also allows for semi-automatic fire, and fires from a closed bolt. This allows for better accuracy, but is less efficient in heat dissipation.

The HK 21 was officially classified as a "General Purpose Machine Gun" (GPMG) - although it was also considered a "Light Machine Gun" (LMG) - which later became a family of supporting weapons. The series was based on the very successful HK G3 battle rifle/assault rifle, which was later widely used around the world.

The HK21 is a German 7.62 mm general-purpose machine gun, developed in 1961 by small arms manufacturer Heckler & Koch and based on the G3 battle rifle. The weapon is in use with the armed forces of several Asian, African and Latin American countries.

The basic action of the new machine gun, which received the company designation HK 21, was similar to that of the G3 rifle. The HK21 fired from a closed bolt (not that big an issue since its heavy barrel was really quick-detachable) and, unlike most machine guns, its belt feed module was located below the receiver.