Doesn't sound like it here. There's not a lot of valid reasons to build an untraceable firearm.https://www.justice.gov/opa/pr/frame-and-receiver-rule-goes-effectWednesday, August 24, 2022
Today, the Department of Justice Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) “Frame or Receiver” Final Rule goes into effect. The new rule modernizes the definition of a firearm and makes clear that parts kits that are readily convertible to functional weapons, or functional “frames” or “receivers” of weapons, are subject to the same regulations as traditional firearms. This rule will help curb the proliferation of “ghost guns,” which are often assembled from kits, do not contain serial numbers, and are sold without background checks, making them difficult to trace and easy to acquire by criminals.
“Last year, the Justice Department committed to modernizing our regulations to address the proliferation of ‘ghost guns’ that law enforcement officers across the country have increasingly recovered from crime scenes,” said Attorney General Merrick B. Garland. “These guns have often been sold as build-your-own kits that contain all or almost all of the parts needed to quickly build an unmarked gun. And anyone could sell or buy these guns without a background check.
“That changes today. This rule will make it harder for criminals and other prohibited persons to obtain untraceable guns. It will help to ensure that law enforcement officers can retrieve the information they need to solve crimes. And it will help reduce the number of untraceable firearms flooding our communities. I am grateful to the professionals across the Department who worked tirelessly to get this important rule finalized and implemented, and who did so in a way that respects the rights of law-abiding Americans.
xxxxxxxxxxxxxxxxxxxxxxxx
https://everytownresearch.org/report/atf-final-rule-ghost-guns/4.12.2022 (04 Dec 2022 )
Ghost guns are the fastest-growing gun safety problem facing our country and have emerged as a weapon of choice for violent criminals, gun traffickers, dangerous extremists, and other people legally prohibited from buying firearms. Ghost guns are also the thread connecting a recent increase in gunfire on school grounds. Schools in Arizona, New Mexico, Maryland, and Kansas have been devastated by school shootings involving ghost guns – highlighting a scary trend and another important reason to regulate these dangerous weapons.