Infantry Weapons

Zastava M21 assault rifle

The Zastava M21 is a Serbian 5.56x45 mm NATO assault rifle derived from the Kalashnikov operating system and produced by Zastava Arms. In the Boko Haram Insurgency, regional reporting and militant-media analysis document M21 rifles in the hands of Boko Haram and ISWAP fighters, often assessed as captured or diverted from Cameroonian security-force stocks.

Boko Haram InsurgencyBoko Haram and ISWAP

Conflict side: Boko Haram and ISWAP
Built by: Zastava Arms
Built in: Serbia

Zastava M21 assault rifle, 5.56x45 mm NATO assault rifle, Infantry Weapons

Image source: Zastava M-21.jpg

Profile

Type: 5.56x45 mm NATO assault rifle
Conflict side: Boko Haram and ISWAP
Origin: Serbia
Service note: Introduced in the 2000s and documented in Lake Chad basin insurgent use after 2015

NATOassault-rifleriflesmall-armsportable

Service History

In service: Current manufacture and export service; documented with Lake Chad basin armed groups after 2015
Used by: Boko Haram and ISWAP, Cameroonian Armed Forces, Serbian Armed Forces
Wars: Boko Haram Insurgency

Production History

Designer: Zastava Arms
Designed: Early 2000s
Built by: Zastava Arms
Built in: Serbia
Produced: 2000s-present
Variants: M21 ABS, M21 SBS, M21 BS

Specifications

Caliber: 5.56x45 mm NATO
Operating system: Gas-operated Kalashnikov-pattern long-stroke piston with rotating bolt
Magazine: 30-round detachable box magazine
Barrel length: 460 mm on the M21 ABS; shorter 375 mm and 290 mm variants reported
Length: 1000 mm with stock extended; 750 mm folded on the M21 ABS
Weight: 4.3 kg with empty polymer magazine on the M21 ABS
Rate of fire: 600 +/- 50 rounds per minute

Conflict Usage

Boko Haram Insurgency: Side: Boko Haram and ISWAPRole: Insurgent small-arms combat and trainingstrike
Documented in Boko Haram and ISWAP imagery and surrendered-weapons reporting, with regional analysts identifying Zastava M21 rifles likely captured from Cameroonian security forces.

Zastava M21 assault rifle Images

Zastava M21 assault rifle, 5.56x45 mm NATO assault rifle, Infantry Weapons - view 1 — Source: Zastava M-21.jpg

Zastava M21 assault rifle, 5.56x45 mm NATO assault rifle, Infantry Weapons - view 2 — Source: Zastava M21 rifle with corner display.jpg

Zastava M21 assault rifle, 5.56x45 mm NATO assault rifle, Infantry Weapons - view 3 — Source: Zastava M21-noBG.png

Related Weapon Systems

AR-10 Super SASS, Semi-automatic sniper rifle, Infantry Weapons

Infantry WeaponsAR-10 Super SASSSemi-automatic sniper rifleThe AR-10 Super SASS is an ArmaLite 7.62x51 mm NATO semi-automatic sniper rifle built around the AR-10 platform with a precision barrel, adjustable stock, and suppressor-tunable gas system. In the Boko Haram Insurgency, open-source reporting and arms-control research identify the Super SASS as a rare rifle associated with Boko Haram and ISWAP-linked materiel, probably entering the conflict through Nigerian military procurement and subsequent capture, diversion, or recovery evidence.

FN FAL, 7.62 mm battle rifle, Infantry Weapons

Infantry WeaponsFN FAL7.62 mm battle rifleThe FN FAL is a Belgian 7.62 x 51 mm NATO battle rifle designed by Fabrique Nationale after World War II and widely copied or license-produced. In the Battle of Marawi record, it appears as a recovered Maute-group weapon: Philippine forces reported three FAL rifles among firearms found after the urban fight.

FN MAG general-purpose machine gun, 7.62x51mm NATO general-purpose machine gun, Infantry Weapons

Infantry WeaponsFN MAG general-purpose machine gun7.62x51mm NATO general-purpose machine gunThe FN MAG is a Belgian belt-fed 7.62x51mm NATO general-purpose machine gun designed and originally manufactured by FN Herstal. In the Boko Haram Insurgency archive, it is represented through a 2021 report of Boko Haram deserters near Bama surrendering weapons that included an FN MAG, evidence of the gun's presence in insurgent small-arms stocks rather than a documented state transfer.

Heckler & Koch G3, 7.62 mm select-fire battle rifle, Infantry Weapons

Infantry WeaponsHeckler & Koch G37.62 mm select-fire battle rifleThe Heckler & Koch G3 is a roller-delayed 7.62 x 51 mm NATO battle rifle developed in West Germany from the CETME rifle family. Its long service life and licensed production have left G3-pattern rifles in multiple conflict arsenals, including documented Boko Haram small-arms holdings in the Lake Chad basin, RSF-held modified rifles in Sudan, and Saudi-linked G3 rifles reported in Yemen's fragmented arms environment.

HK21 general-purpose machine gun, 7.62 mm general-purpose machine gun, Infantry Weapons

Infantry WeaponsHK21 general-purpose machine gun7.62 mm general-purpose machine gunThe HK21 is a Heckler & Koch belt-fed 7.62x51 mm NATO general-purpose machine gun derived from the G3 rifle family. In the Boko Haram Insurgency, Nigerian military reporting and ISWAP media analysis document HK21-pattern guns among weapons recovered from, or displayed by, Boko Haram and ISWAP forces, making it a small-unit fire-support weapon in the Lake Chad conflict archive.

K2 assault rifle, 5.56 mm assault rifle, Infantry Weapons

Infantry WeaponsK2 assault rifle5.56 mm assault rifleThe K2 is a South Korean 5.56 mm assault rifle originally associated with Daewoo and now the wider SNT Motiv K-series small-arms line. In the Boko Haram Insurgency archive, its relevance comes from ISWAP photographs and videos that showed Daewoo K2 rifles among militant small arms, likely reflecting capture or diversion from regional state inventories rather than formal insurgent procurement.

Sources

Assault Rifle M21 ABSPublisher: Zastava Arms | Note: Supports manufacturer identity and M21 ABS specifications including caliber, magazine capacity, barrel length, folded length, weight, and rate of fire. | Accessed: 2026-06-21 Zastava M21 assault rifle (Serbia)Publisher: Modern Firearms | Note: Supports background on Zastava Arms manufacture, Kalashnikov-pattern design, export status, rifle features, variants, and baseline specifications. | Accessed: 2026-06-21 Islamic State Province's Media in Africa: Comparing Trends in West and Central AfricaPublisher: The Jamestown Foundation | Note: Supports Boko Haram Insurgency direct-use context: Zastava M21 rifles used by ISWAP fighters in photographs and videos from operations against Nigerian forces and Boko Haram rivals. | Accessed: 2026-06-21 Boko Haram Trains Next Generation Of Fighters In New VideoPublisher: HumAngle | Note: Supports Boko Haram Insurgency direct-use context: Zastava M21 rifles fielded by Boko Haram instructors and a child trainee in a 2021 training video, likely captured from Cameroonian security forces. | Accessed: 2026-06-21 Military's Conduct Encouraging Defection Of Boko Haram FightersPublisher: HumAngle | Note: Supports Boko Haram Insurgency direct-use context: a Zastava M21 rifle submitted by surrendering Boko Haram fighters near Bama was transferred to Nigerian troops with other weapons. | Accessed: 2026-06-21 Zastava M-21.jpgPublisher: Wikimedia Commons | Note: Image provenance and licensing page for the primary Zastava M21 rifle image. | Accessed: 2026-06-21 Zastava M21 rifle with corner display.jpgPublisher: Wikimedia Commons | Note: Image provenance and licensing page for the Zastava M21 display rifle image. | Accessed: 2026-06-21 Zastava M21-noBG.pngPublisher: Wikimedia Commons | Note: Image provenance and licensing page for the transparent-background Zastava M21 image derived from a Commons file. | Accessed: 2026-06-21