Perhaps I'm missing something, but wouldn't it be easier to just buy a gun already chambered in 9mm? The Tokarev is a neat gun for sure, but to my mind half of what makes it so neat is the 7.62x25 cartridge.
Smith, and Wesson, and Me. -H. Callahan
Well waddaya know, one buwwet weft! -E. Fudd
All bad precedents begin as justifiable measures. -J. Caesar