CZ 75 Compact 357 SIG

[Skookum]

If one had two CZ 75 Compacts, one in 9 Luger and one in .40 S&W, could the 9 Luger barrel be dropped into the .40 S&W to make the latter fire 357 SIG?

[Stuart]

yes..the barrel itself may or may not need fitting otherwise just need to rechamber the 9mm barrel for .357 SIG

[Charlie-AKA]

What about mags? Will the standard factory mags shoot 357 sig also?

[nalioth]

Since .357 Sig is nothing more than a necked-down .40 S&W, all that is needed to run it in a .40 S&W firearm is a .357 barrel for it.

Since the parent cartridge of the .357 Sig is a .40 S&W, mags for .40 S&W work fine.