DC Armory a Model for Second Amendment Weapons Transfer? 

Note the Second Amendment:

A well regulated Militia, being necessary to the security of a free State, the
right of the people to keep and bear Arms, shall not be infringed.

Washington District of Columbia  Armory is the home of the DC National Guard and is a First Amendment public assembly location for a wide variety of sports and small expo events. It is located east of the Capitol Building and adjacent to a sports stadium that had once been the home of the Washington Redskins football franchise.  It is accessible from virtually any part of the Washington Metro area and surrounding states. In the past, this interstate access has been a serious matter for ATF illegal weapons transport but a designated place for the legal transfer, such as the Armory, of weapons might greatly reduce the number of transfers.  The Armory has some  training facilities for national guard personnel  and does not require much to expand out to weapons ranges and competitions in them. If the facility is administered by the Guard, its members could also be trainers of civilian civil defense volunteers who need weapon and counter-weapon training.      

But along with many more personnel, in and out of the weapon shows that could easily qualify as First Amendment free assembly areas,  the ATF could develop droids that could be brought to all such assemblies and actually carry out both the device tracking and TBD individual tracking. One of the original major problems of the Second Amendment is that the bearing of arms in and out of militia duty was a necessity in the absence of constituted authority, simply because there were many cases of TBD even in 1789.   'TBD'  is a recent term meaning Traumatic Brain Disorder and is used to describe any person with some form of Trauma.

A ‘droid’ is a multi-core computer system that can independently operate many functions in real time, not exactly off the shelf in this decade, but allows its clients to pass large amounts of data on the internet without direct operator data entry. That is, an ATF officer  at a weapon transfer could use the droid to allow dozens of individuals to authenticate the device transfer and the individuals engaged in the transfer.  Obviously, he would need state constitutional authority to use the droid except in the Federal District(s). Such a droid system multiplies the ATF officer’s ability by a hundred, especially if the droid does instantaneous tracking on site and back at the office. It is technologically feasible to do that now, without stomping on the Constitution, especially if the Federal Firearms License (FFL) system is extended to non-TBD citizens who routinely travel across borders.  The minimum requirements for an FFL would be a federal identification card with encrypted data that prevents counterfeiting and a willingness by the FFL holder to act as a "witness" deputy US marshal when asked.

The concept of such  device transfer facilities, with the DC Armory as model, is to insure the integrity of the citizen's right to defend himself in accordance with the Second Amendment but also to establish the national condition of a "A well regulated militia being necessary to the security of a free state" that regulates and educates without banning the right of self defense. Oddly enough the cost of such facilities might be considerably less than the cost of reacting to the violent misuse  of weapons, especially those of mass destruction capabilities.