It is suppose to be marked CA on the slide.
Originally Posted by S&W
CA Compliant (122002)will have CA marking on the side of the slide.
If it doesn't check to see if you have a threaded barrel.
Because you may have gotten a non-approved version and the non-approved versions are considered assault weapons under CA laws [PC 30515(a)(4)(A)].
This happens every now and then when a handgun gets placed on the Roster and in the rush to sell them, some CA FFL dealers will sell the non-approved version thinking it applies.
Examples... Glock 21SF with ambi-mag release & Kahr Arms P-380.
So, if you get a non-approved version.
Immediately remove the threaded barrel and make it CA compliant.
"If someone has a gun and is trying to kill you, it would be reasonable to shoot back with your own gun. - Dalai Lama (Seattle Times, 05-15-2001).