Any place that makes you do a pistol transfer application for any receiver is stupid and needs to learn to read the damn instructions on the 4473, and maybe even the open letters and newsletters the ATF puts out because some people are just too stupid to understand simple English.
Pet peeve of mine are dealers who don't bother to read the forms they are filling out, or to ever ask their compliance agent (who is there for a reason) and instead make shit up or only understand half of what is on paper.
Like the places that still do this, even after the DOL said not to.
The state used to allow you do do the pistol transfer application for receivers, but as I said earlier they don't want them even for Glock frames. I have a copy of the email from the DOL about it saved on my work email.
Or the places that require a piece of mail in addition to a military ID and PCS orders (getting things mixed up). the Servicemember, not a family member, and even then it would need to be first class mail from a government agency not just "mail."