Sistema1927
US Veteran
No If I transfer a lower as a rifle it is a rifle, not a pistol, unless you do the paperwork for an SBR. If someone under the age of 21 wants to purchase a stripped lower it MUST be sold as a rifle, if purchased from an FFL. From that time forward it is a rifle, and cannot be converted back and forth between a rifle/pistol. I discussed this with ATF today. Be Safe,
You are still wrong, and whoever you spoke with at the ATF is wrong.
A lower always transfers as an "Other", not as a pistol or a rifle. "Other" is, as you said, limited to 21 and above, but it is still not either a rifle or a pistol.
When you find yourself in a hole, quit digging.