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[edgerly779]

^^^ Wrong thing to say. Should still be assembled ar pistol lower brought with you to ca. Now you register and then sell. Can a stripped lower be assembled as a semi?? Big question.

[FourPaws]

As was mentioned previously, if it has never been a rifle and was originally a pistol on 4473 then register as pistol frame only. You should be GTG. $19/transaction.

[ar15barrels]

Nevada 4473 means nothing here.
It's only CA 4473's that cause problems with pistol registration of a stripped lower.

A stripped lower bought in Nevada as an "other" can legally be built into a pistol.
As long as it was never assembled into a rifle, it can be registered in CA as a semi-auto pistol.