Hello gentlemen:
Thank you for your warm answers.
I can not import any gun parts to Mexico; that is for sure.
I am not sure if I can buy one meter of steel tube from outside vie Internet; probably need to pay taxes or perhaps I am not allowed to buy steel from outside the Country, I do not know.
Locally I obtain 1518 steel with a 16mm inner diameter and 32mm outer, so I can make the inserts with that material.
I also hardly want to use that Darne again, so I think the best (from safety matters) is to convert it to a 20 ga via steel inserts.
Your words and interest in the subjet are the best help for motivate me to do it, thank you!
I will comment here the advances (or failures) I will have with this project.
Best,
Jose
