There is a “Director’s Cut” released on R3 Korean DVD. I own this version and from what I can tell, the only differences are very subtle – the only one I really noticed was a close up of the Korean guy with the broken leg with the top of his head blown out at the arms dealer’s. There might be slightly more gore in that final shoot-out, but it’s hard to tell given the original theatrical release was so bloody already. The R4 version is the theatrical release.