Okay, I'm still a bit confused
On a registered RECEIVER gun, if you break just the sear for whatever reason, it can be REPLACED with a factory part?
If the answer is no, I don't really see what the advantage is to owning a registered receiver.
Democracy: A government of the masses, authority derived through mass meetings or any other form of direct expression; results in mobocracy; attitude toward property is communistic negating property rights; attitude toward law is that the will of the majority shall regulate whether it is based upon deliberation or governed by passion, prejudice, and impulse, without restraint or regard to consequences; its result is dem-o-gogism, license, agitation, discontent and anarchy.
Republic: Authority is derived through the election by the people of public officials best suited to represent them. Attitude toward property is respect for laws and individual rights and a sensible economic procedure. Attitude toward law is the administration of justice in accord with fixed principles that establish evidence with a strict regard for consequences. A greater number of citizens and extent of territory may be brought within its compass, it avoids the dangerous extremes of either tyranny or mobocracy. Results in statesmanship, liberty, reason, justice contentment and progress, is a standard for government around the world.