When I bought my pistol, I had to fill out paperwork with very specific info about myself and the pistol, and then had to wait 7 days before it was mine. I don't see why everybody shouldn't go through the same regardless of where they buy one (ccw permit holders notwithstanding). It's easy to just save that background check and firearm data instead of discarding it within 24 hours.
Which part of the 2A suggest the government has a right to approve our purchases? NICS when all is said and done is a denial mechanism that can and has stopped lawful citizens from purchasing weapons... I do not know who the burden falls upon in an appeal but none of our other rights are regulated in such a manner so why is it acceptable that the 2A is?
I get it we are never going to get to enjoy the 2A as intended, but that doesn't mean we have to buy into the stuff we have been told is the way it should be...