I am restoring an AMT semi-auto SS pistol(Ruger MkI copy) for a customer. He asked me to provide two complete magazines. The complete mags are not available, but I was able to assemble all of the necessary parts. The ss magazine body is finished except that the back seam is not welded. Unfortunately, I don't weld. Does anyone know a good 'smith who can tig these mags together?

Any TIG Welder can do it

Machine a piece of 1/4" thick 360 brass to slip fit inside the mag body to act as a heat sink.
Fusion TIG weld the seam.Done

Thanks guys.