The first version of Buk adopted into service carried the GRAU designation 9K37 Buk and was identified in the west with the NATO reporting name "Gadfly" as well as the US Department of Defense designation SA-11.
Versi pertama dari Buk diadopsi ke dalam layanan dilakukan penunjukan Grau 9K37 dan diidentifikasi di barat dengan NATO pelaporan nama "Gadfly" serta Departemen Pertahanan AS penunjukan SA-11.