We've had this in NY since the passage of the SAFE Act 5 years ago. There is still no background checks here to buy ammo (the background check system is not yet in place and may very well never be), some out of state vendors are still shipping ammo to your door in NY, and shooters/hunters freely give ammo to each other at private ranges. These types of laws are, for all practical purposes, unenforceable. The most likely way for one to get prosecuted under these types of laws is if you give ammo to someone who commits a crime with it and they rat you out. So - - -, you people in California, don't give ammo to anyone you don't know well or that won't be used up at a range. Living under stupid laws like these mean that you just have to get comfortable ignoring these stupid laws. Laws like these are all about making it SEEM that politicians are actually doing something to make people safer. The effectiveness or enforceability of these laws is really irrelevant to them.