Gun Control & RKBA

Are the reasons for such registrations of other devices consequent to the government having a legitimate nexus to the operation of the devices?

Again the question is to establish the reason(s) specifically for registration of firearms. I suggest that saying "I have to register my car, why not your gun?" establishes a false equivalence between the car and the gun which remains as yet legislatively suspect and legally unsound.

Boarding a commercial flight binds you to whatever rules the airline, airport and aircraft operator include in their contract of carriage and any rules enforced by law at an airport open to the public.

You ask, "Why are guns different?"; I say, "Show me that they are the same." There is a protected right to keep and bear arms along with certain rights to privacy and protections against self-incrimination.

This question is not rhetorical in the least. There are numerous political factions that seek to establish new bureaucracies and use any subsequent affects to their benefit in future elections.