[aHKoholic]

Have an interested party wanting to purchase my complete 16" POF416 upper. Is it legal to sell it and ship to him?
It is not the complete firearm, just the upper with bolt, carrier, etc.

 

[LTK41D]

it is completely legal to transfer the pof upper assembly. the lower receiver is the critical piece that must be purchased legitimately through a FFL

 

[MotoJB]

Any ar15 upper is legal in CA...it just depends upon what the buyer does with it (puts it on a pinned 10 round mag lower, or removable mag lower) that makes it legal or illegal. Not your problem.

You can sell AR15 uppers to CA all day long without worry.