The Zastava M21 is a series of

5.56×45mm NATO The 5.56×45mm NATO (official NATO nomenclature 5.56 NATO, commonly pronounced "five-five-six") is a rimless bottlenecked centerfire intermediate cartridge family developed in the late 1970s in Belgium by FN Herstal. It consists of the SS109, ...

rifle A rifle is a long gun, long-barreled firearm designed for accurate shooting and higher stopping power, with a gun barrel, barrel that has a helical or spiralling pattern of grooves (rifling) cut into the bore wall. In keeping with their focus o ...

s developed and manufactured by

Zastava Arms Zastava Arms () is a Serbian manufacturer of firearms and artillery, based in Kragujevac, Serbia. In 1853, it was founded, and cast its first cannon. It is the leading producer of firearms in Serbia and is a large contributor to the local defense ...

Serbia , image_flag = Flag of Serbia.svg , national_motto = , image_coat = Coat of arms of Serbia.svg , national_anthem = () , image_map = , map_caption = Location of Serbia (gree ...

Description

The M21 is based on the

Kalashnikov rifle Kalashnikov rifles (), also known as the AK platform, AK rifles, or simply the AK, are a family of assault rifles based on Mikhail Kalashnikov's original design. They are officially known in Russian as ''avtomat Kalashnikova'' (), and informally ...

, chambered in the

cartridge. The current models use a 1.5mm thick stamped receiver. The M21 can incorporate

picatinny rails The 1913 rail (MIL-STD-1913 rail) is an American rail integration system designed by Richard Swan that provides a mounting platform for firearm accessories. It forms part of the NATO standard STANAG 2324 rail. It was originally used for mountin ...

for mounting accessories like optics, vertical grips, bipods, etc. The Zastava M21 is gas operated, long stroke piston with a rotating bolt locking system rifle. It features a hard chromium-plated, cold forged standard rifled or an optional polygonal rifled barrel, integrated 22mm flash hider grenade launcher, heavy-duty synthetic furniture with a polymer folding stock similarly to the

AK-74M The AK-74 (Russian: , tr. ''Avtomat Kalashnikova obraztsa 1974 goda'', lit. 'Kalashnikov assault rifle model 1974') is an assault rifle designed by small arms designer Mikhail Kalashnikov in 1974 as a successor to the AKM. While primarily a ...

, and side optics rail as standard (optional adapter base for cover mounted picatinny rail also available). The rifle can also mount a 40mm under-barrel grenade launcher. It has a magazine capacity of 30 rounds. The cyclic rate of fire is 680 rounds per minute, and the sustained rate of fire is 120 rounds/min. The Zastava M21 uses a conventional barrel, while the Zastava M21B uses a polygonal barrel. The regular barrel has six grooves with a right-hand twist. An octagonal polygonal version is also available and has four grooves with a right-hand twist (M21B). Barrels are also hard chrome plated to provide a longer service life. The rifle has conventional

iron sights Iron sights are a system of physical alignment markers used as a sighting device to assist the accurate aiming of ranged weapons such as firearms, airguns, crossbows, and bows, or less commonly as a primitive finder sight for optical telescop ...

that consist of a front post and a flip-up rear sight with 300m and 500m apertures. A set of

picatinny rail The 1913 rail (MIL-STD-1913 rail) is an American rail integration system designed by Richard Swan that provides a mounting platform for firearm accessories. It forms part of the NATO standard STANAG 2324 rail. It was originally used for mount ...

s on the hand guard can mount various optoelectronic devices. The M21 is a modular weapon, with configuration dependent on the task and mission. Choices of optical sights include "TELEOPTIK" (ON M04) and "ZRAK" (ON M04A). Optoelectronic devices include a reflex sight ("MARS" M04), two bookmark target lasers ("AIM2000" M04A and "INFIZ" M04), two passive monoculars (M04 MINI N/SEAS and "MARS" M04+MINI N/SEAS), passive sight ("SOVA" PN 3x50).

Variants

*M21 A – Standard baseline assault rifle. **M21 ABS – Built-in

system. *M21 S – Compact short barrel assault rifle. **M21 SBS – Built-in picatinny rail system. *M21 C – Carbine. **M21 BS – Built-in picatinny rail system.

Users

* – Used by special forces * – Used by National Police. * – Used by the Rapid Intervention Battalion (BIR) * * * – 500 purchased in 2005. * * – standard service rifle of the

Serbian Armed Forces The Serbian Armed Forces () is the military of Serbia. The President of the Republic acts as commander-in-chief of the armed forces, while administration and defence policy is carried out by the Government through the Ministry of Defence. The h ...

and

Gendarmery A gendarmerie () is a paramilitary or military force with law enforcement duties among the civilian population. The term ''gendarme'' () is derived from the medieval French expression ', which translates to "men-at-arms" (). In France and som ...

References

External links

Zastava M21 at Zastava Arms
{{Zastava firearms 5.56×45mm NATO assault rifles M21 Kalashnikov derivatives Zastava Arms Weapons and ammunition introduced in 2004 Military Technical Institute Belgrade

Description

Variants

Users

See also

References

External links