I've got a CZ-75B in 40SW and I have been told that the SP-01 9mm barrel is the same profile. I'm wondering if it will drop into my CZ-75B-40, to get more economical practice. I realize that the recoil spring may need to lightened and reliability with the loose breachface wouldn't be 100%, but I was wondering if it was feasible and if so, where can I source a SP-01 barrel? I far as I know, CZ-USA is not supporting it yet. Anyone have any ideas?