There are only three versions of that missile - the U.S. Megatron, the U.S. Shadow Blade Megatron, and the Japanese Megatron.
I think the color on the Shadow Blade Megatron's missile is a bit more purplish, as HP has it pictured, so that one is out.
The missile in question *could* be the Japanese Megatron missile (it may be more of a deep red like in that second pic, but I'm not sure as I don't own the figure), but the more I look at it, the picture we have for the missile is likely just a little too "
orange". Some cameras don't pick up reds too well.
MIKE
engledogg