Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Vektor CR-21 is a modern South African assault rifle (CR-21 meaning Combat Rifle 21st Century) chambered for 5.56x45mm NATO ammunition. It has been designed by the Vektor division of Denel as a possible replacement for the South African Army''s current R4 assault rifle. First unveiled in 1997, the rifle utilises the bullpup layout like the Singapore SAR-21, Israeli IMI Tavor TAR-21 and the British SA80. This enables the rifle to be as short as a typical carbine, whilst still retaining the muzzle velocity of longer assault rifles.