9mm CZ 75B Conversions to 40/357sig?

E

Ed2

New member
Are there conversion kits available to change 9mm into a 40 and/ or a 357sig? If so where can you get them, what components are included (barrel, slide, etc.), and what do they cost?
Thanks,
Ed
 
Buying a nice 40 S&W 75B would be almost cheaper and you would have another gun to boot. The 40 caliber 75b only needs
a 357 Sig barrel to change over...BarSto Barrels has been working on them and progress on them is not known...
Shoot well
 
Both of the previous answers were correct, but they didn't explain why.

The 9mm 75B is built on a different frame than the .40 s&w version. The .40 75B has a full length guide rod, etc. The .40 s&w barrel has a larger diameter than the 9mm and wouldn't fit in the 9mm slide.

A .357 SIG barrel, if one could be made and adjusted to fit, would still have to be larger in the chamber area, might not lock up properly.

And with either larger caliber barrel, if the 9mm frame could handle the extra punch -- and I'm not sure it could -- the extractor wouldn't work right, and the headspace would be wrong, too.


(Get a .40 and have Bar-Sto build you a 9mm barrel for it.)
 
It's pretty easy to go from 40S&W or 357SiG to 9mm, but not the other way. If you made the 357SiG or 40S&W barrel thin enough to fit through the hole in the 9mm slide, it would probably have a life of ten mags.
 
You must log in or register to reply here.
Back
Top