FWIW, I would think that just buying a repro barrel would be cheaper...I'm guessing disassembly would be required, too...You didn't mention if it was a commercial or military Luger, or whether the original barrel was an heirloon or valuable for sentimental reasons...if so, it can also be relined in the original 30 caliber, although you'll need a good gunsmith to do it...sadly, like everything else, most gunsmiths these days are just parts changers...all the real smiths are retired or passed on...
