Three lengths of magazines:
1) SHORT, 9x19, 1.169"
2) LONG, 45acp, 1.275"
3) EXTRA LONG, 7.62x25mm, 1.381"
The reason no one makes a Tokarev ammo shooting pistol in the USA, is that the ammo is too long for the magazine, magazine well, frame, etc.
I have been going the other way, if the Tokarev and Star Super B have such long magazines, why not convert to 9x23mm?
In my opinion, the 9x23mm is a better self defence round than the 7.62x25mm Tokarev round, unless you are attacked by prairie dogs at 100 yards wearing bullet proof vests.