Jim
Sorry, i dont understand... what is a mandrel??
I fear that if I try to straighten out the piece, it will end up ruining ..

Peter
Thanks for your advice! With that small curve the handle mechanism works perfectly.

Waren
Your help are welcom!
I will be very grateful if you give me the measures to reproduce the carry handle. I sen now a PM!

I was thinking that if a ZB butt stock does not appear for sale, I could reproduce it using a Bren reproduction that they sell at IMA-USA.