i was stumped when i saw the pic as it is not the standard ak bajonett style as i know normally, it looks like the k98, the ak bajonett has a square hole in the blade and a counterpart on the sheath for to be used as a wire cutter the blade also has very fine teeth on the top of the tang for cutting rope the blades apperence is more like a bowie,
I did a pic search also and found that that one is for an AK 47 CCCR hope this helps, Don