My dad has recently purchased a Semi Auto MP5 parts kit and "flat" receiver. He also purchased a complete MP5 from Atlantic. Both are pistols but he wants to SBR one of them. Since the flat kit doesn't have a serial number just like an AR 80% lower, can he form 1 it to make it a SBR?
Does he have to assign it a serial number? Can he make the serial number whatever he wants?
Or is he better off SBRing the serialized gun?
Does he have to assign it a serial number? Can he make the serial number whatever he wants?
Or is he better off SBRing the serialized gun?
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