Either a Sudarev-designed PPS-43 or possibly the earlier PPS-42 version. As for its provenance, most any sort of weapon is liable to turn up most anywhere in Africa; the place is a collector's dream and an armourers and logistician's nightmare.
But the things also turned up in Rhodesia during the 1970s, and I believe were also used and possibly produced by the North Koreans for their airborne forces before being replaced with Kalishnikovs, making the surplus Sudarevs available as military aid to *National Liberation* movements- or paying customers with the right cash.
