|Place of origin||South Africa|
|Weight||3.72 kg (8.2 lb)|
|Length||760 mm (29.9 in)|
|Barrel length||460 mm (18.1 in)|
|Action||Gas-Operated, rotating bolt|
|Rate of fire||700 round/min (full auto)|
|Muzzle velocity||980 m/s|
|Feed system||20 round magazines or 35 round R4 magazines|
|Sights||Fiber optic illuminated reflex sight|
The Vektor CR-21 is a prototype South African assault rifle ("CR-21" being an abbreviation of Combat Rifle 21st Century) chambered for 5.56x45mm NATO ammunition. It was designed by Denel Land Systems as a possible replacement for the South African National Defence Force's current R4 assault rifle, however Denel Land Systems has since shifted focus to offering an upgraded R4 assault rifle to the SANDF instead.
The rifle is being marketed for export customers, but no sales have been achieved.
First unveiled in 1997, the rifle utilises the bullpup layout. This enables the rifle to be as short as a typical carbine, whilst still retaining the muzzle velocity of longer assault rifles. However, this makes the CR-21 only capable of being fired from the right hand.
Internally, the CR-21 uses a slightly modified version of the Kalashnikov action found in the R4 assault rifle, which is known for its reliability and relatively low weight. The rifle also makes significant use of high-impact polymer, with the only exposed metal part on the rifle being the front of the barrel with its integral flash suppressor. Both of these result in the rifle having a low loaded weight, of 3.72 kg (8.2 lbs). The CR-21 comes standard with a 1X magnification optical sight with an illuminated reticle that does not require batteries. This sight is mounted on a sight rail, allowing easy removal and attachment, as well as the use of a range of different sight options. The forward handgrip has been specially designed to be easily removed and replaced with a grenade launcher similar to the M203 grenade launcher. Finally, the stock has a built-in compartment which stores a cleaning kit for the rifle, removing the usual need for the soldier to carry this separately.
- "Vektor CR-21". Military Factory. http://www.militaryfactory.com/smallarms/detail.asp?smallarms_id=353. Retrieved 2010-07-05.
- "Vektor CR-21". Military Today. http://www.military-today.com/firearms/vektor_cr21.htm. Retrieved 2010-07-05.
- Max Popenker. "Vektor CR-21 assault rifle (South Africa)". http://world.guns.ru/assault/safr/vektor-cr-21-e.html. Retrieved 2010-07-05.
- Leon Engelbrecht. "Denel showcases a 21st Century R4 assault rifle at AAD". http://www.defenceweb.co.za/index.php?option=com_content&view=article&id=9747:denel-showcases-a-21st-century-r4-assault-rifle-at-aad&catid=50:Land&Itemid=105. Retrieved 2012-03-13.
- Omutumua Oshili. "Vektor CR-21 Assault Rifle". http://www.satruth.co.za/equip_00076.htm. Retrieved 2010-07-05.
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