Vektor R4
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The Vektor R4 is a South African 5.56×45mm assault rifle. It entered service as the standard service rifle of the South African Defence Force in 1980. In South African service, the R4 replaced the R1, a variant of the 7.62×51mm FN FAL. It was... Wikipedia
Action: Gas-operated (rotating bolt)
Cartridge: 5.56×45mm NATO
Effective firing range: 500 m (550 yd)
Feed system: 35-round detachable magazine
In service: 1980–present
Length: 877 mm (34.5 in) with stock extended