Looks like more than a ricochet to me. That is one tough helmet. However, my guess that the round that hit him was a standard AK47 round, which is much less powerful that the 7.62 round used in the comblock sniper rifle. That round is about as powerful as a .30-06 round and my guess is the helmet would have been penetrated if that round was used...unless the round had been fired from a great distance and had lost a lot of velocity.
You are likely to be right: from the picture it does not look like a glancing hit.
WHy would any Jihadists wanna crack of just 1 shot from an AK47 when they could have just emptied at least three spitters in his (Snyder's) direction?
You could be right. The AK of course uses the 7.63x39, but the dragunov (to which i think you refer) is 7.62x54R.
Thats quite the mean round, and I think it would have gone through the helmet.
However, its also unlikely that it was a stray AK round... at the ROF of the AK, there would have been many more flying around this guy if someone was shooting at him.
Whatever it is, Im sure hes one happy man right now.