I totally get what you are saying, BUT...if you have a homemade firearm with no serial (you posses it) and you get stopped by law enforcement and they inspect the firearm and see it has no serial...what happens next?
If there is no evidence that a serial number has been altered, removed, or obliterated, nothing as of this moment. That might change in the future.
There is no current federal law requiring a home made firearm have a serial number.
Am I required to apply a serial number to a gun I manufacture?
Short Answer: No
Long Answer: My research indicates there is no federal law or regulation that requires a person to mark his or her personally manufactured firearm with a serial number or other information. I had this confirmed by the Firearms Industry Programs Branch of the Bureau of Alcohol, Tobacco, Firearms and Explosives (BATFE).
Read the original article here: Am I Required to Apply a Serial Number to a Homemade Firearm? .
There is no current Oregon law requiring a home made firearm have a serial number. That might change in the future. But getting back to your original claim, there is no Oregon law that states "an unserialized firearm is assumed to be having the serial removed, altered, or otherwise obstructed". That is flat out WRONG.
You can't be charged with altering, removing, or obliterating something that never existed.
Hypothetically if for some reason a police officer inspects a firearm made from an 80% lower you would explain it is home made and perfectly legal. As long as the firearm doesn't have commercial markings (Colt, Ruger, S&W, etc.) indicating it is not home made and it should have a serial number, there is no reason to suspect it had a serial number that was removed.
If you don't want to worry at all about ever having to explain to a police officer why your home made firearm has no serial number, don't mess around with home made receivers. If you decide to anyway then don't complain if you have some explaining to do.
But before you get farther out in the weeds, please stop telling people
oregon law states that an unserialized firearm is assumed to be having the serial removed, altered, or otherwise obstructed.
because that is flat out wrong.
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