First published by Money Metals here: https://www.moneymetals.com/news/2018/02/26/risky-self-storage-gold-silver-iras-001427

Bullion investors buy gold and silver as a matter of self-reliance. Physical metals aren’t dependent upon the promises of financial institutions, governments, or other third parties. Recently a few firms promoting “self storage” precious metals IRAs have been trying to exploit the self-reliance streak running through bullion investors in a manner that could cause significant harm. These firms offer a scheme to circumvent IRS rules which require IRA metals be stored by a third party, and some people are biting. The warnings are piling up.