As far as the law is now it means it has a bullet button . There are some older California compliant version out there that are from the first AWB before the bullet button . They have a fixed/pinned stock no flash hider just a smooth crowned barrel and some other stuff I don,t remember .
I live in CA and both of these are California compliant. The dark earth one I bought from the LGS the other I built
If its a new production rfle it will be just like all the others exept it will have a bullet button http://www.smith-wesson.com/webapp/w...9_757784_image
I can't seem to find any photos of what the older ones looked like , sorry