I live on the mainland, but my son lives in Honolulu, hence my question.  Sorry if I am long winded.

I built him an AR soon after he came home from Iraq in 2008.  A couple of years later he transferred to Hawaii and took the rifle with him.  He had no idea about local laws, and did not unpack, or even think about his AR for a couple of years.  Of course ne missed the deadline for local registration.

I've advised him to take off the upper and as many of the parts from the lower receiver and ship those parts back to me.  I can then rebuild them on a new receiver and save the gun for when he moves back home.

The question is, what should he do with the old lower.  Can he turn it in to the HPD and not be charged for having it in the first place?  Destroy it?  What are his options?

Also, if it has not been registered, is it still possible to take the whole rifle to an FFL and have it shipped to my local FFL?

What do you advise?

Thanks!