I agree that the .50 cal doesnt sound up to par as the others but if you go to jims site he was a soldier in the swedish army. So i think he wouldnt put any fake sounds into the mod since he heard them all before, but i guarantee that is what the M60 sounds like. I dont know what the PK sounds like though. Ill have to ask my Father. He was a MG Gunner during the 60's.