I have the opportunity to purchase a collection of both regulated and non-regulated firearms from an acquaintance's estate sale. This collection is comprised of multiple handguns and long guns and is located in MD. I have my HQL but have not purchased another regulated firearm as of yet. Is it possible for me to purchased the entire collection at once and if so, what are the specific requirements for me to do so? Anyone with any direct experience with this specific situation? Appreciate the help!