[Mr Rogers]

Nothing specifically says it cannot be a B-61 nuke. Still comfortable with that line of reasoning?

A serial number does not impact the gun’s ability to function. I can protect myself as well with a gun that has a serial number as one without. All the guns I carried in the military had serial numbers.

[JRandomFreeper]

And you have it backwards, anyway. What in the Constitution gives the Federal government the power to require serial numbers on firearms? Because without an enumerated power, it's up to the states, or people.

/johnny

[Trod Upon]

Actually I am comfortable with the line of reasoning. Try and buy a B-61 on the private market. Look, I agree that serial numbers are indeed innocuous in and of themselves, even valuable when dealing with situations like theft. The problem is the the logic used to require them can easily be extended to require other modifications/conditions that render a firearm unusable for all practical purposes even though it may still be technically functional. Make no mistake that this is one direction we will be heading after the Heller decision.