But that’s a manufacturer problem. I’m not saying the PURCHASER could buy his lock somewhere else, I’m saying the FFL could purchase them from gun owners and then sell them as legally required the next time someone bought a gun (though this would require the mfgrs to stop including them, but that’s just an issue between the manufacturers and their FFL customers).
I understood you.
The dealer is not permitted to release a handgun unless he is also including a newly manufactured lock. He is not permitted to purchase a "used" lock from a gun owner and satisfy the requirement with such lock.
This is why many gun owners in Kalifornia also own a bag of worthless locks.
Long guns do not have to include a lock if the purchaser signs an affidavit which attests to ownership of a Kalifornia approved gun safe. I don't believe that the affidavit is effective for hangun sales.