I didn't read the rest of the thread but I would NOT send your mags anywhere.

I can't find the article but I did hear from a good source at a local police department in CO that a person was placed on a 72 hour mental health hold. They're guns were taken for safe keeping at the request of the gun owners. Once the person was released from the mental health hold the police department returned all the firearms to the owner. A anti-gun group is attempting to take suit against the pd because they do a background check to return the guns to the owner and they returned the magazines to the owner which in some cases were able to hold more than 15 rounds.

I am still searching for it and I know the person that told me this would not lie about it.