Sig 55x carry handle ?

[darkspace]

Hi folks,
please could anyone help me in a correct identification of this carry handle ? I never saw one and actually I dont know if it is Sig made or aftermarket... materials seems like aluminium or alloy reinforced with steel where it front plug on the receiver notch... here the pic, I will post more detailed pic asap,

thanks,
Karl

[darkspace]

sorry for all these pics, I tried to make as little as possible, thanks in advance to anyone could help me.

[sweetwine]

Interesting never seen one. Have you tried on the Swiss Rifle Board?
Here is there link http://theswissriflesdotcommessageboard.yuku.com/
Lots of good info there and some Swiss folks that know about these things.