This sound is from STALKER - Duty Долг Soundboard

Duty (Долг) is a paramilitary clan of stalkers operating in the Zone with members living according to a code. They, along with Freedom, are also one of the most powerful stalker clans in the Zone. They appear in S.T.A.L.K.E.R.: Shadow of Chernobyl, S.T.A.L.K.E.R.: Clear Sky and S.T.A.L.K.E.R.: Call of Pripyat.