The Heckler und Koch G36 (abbreviated: HK G36) is a modern 5.56 mm German automatic carbine. The first examples of this rifle appeared in 1990, but the weapon entered service in 1996 and is still in service. The weapon - in its basic version - measures 99.8 cm, with the weight of the rifle only at 3.63 kilograms. The theoretical rate of fire is up to 750 rounds / min, and the effective range of the shot - up to 800 meters, with a maximum range of about 2,800 meters. The HK G36 was developed as a new Bundeswehr automatic rifle to replace the G3 rifle in service. Compared to its predecessor, it was characterized primarily by a different caliber (5.56 mm compared to 7.62 mm), and thus lower weight, greater compactness, as well as better properties when firing bursts. The new rifle was initially intended to be used only by rapid reaction units, but this decision was changed over time. In addition to the basic version, several other versions also appeared, including: G36K (version with a shortened barrel), G36KV (export version) or MG36 (manual machine gun). It is worth adding that the G36 version for the Bundeswehr also has an optical and a collimator sights. The G36 rifle and its modernization was and is still used in the armed forces of many countries, e.g. in Australia, Belgium, Brazil and Canada. It was also used by Polish special forces GROM and Formoza. It is also used by the BOA (Bureau of Anti-Terrorist Operations).