4 ms·
> On the AR-15, the lower receiver is the "gun" portion that is serialized. ...unless you make your own (or finish a partial one) then you aren't required to s
by UncleEntity 8y ago
> On the AR-15, the lower receiver is the "gun" portion that is serialized.
...unless you make your own (or finish a partial one) then you aren't required to stamp it with a serial number or tell any (federal) agency about it, a so called "ghost gun".