One, please don't presume to speak for me as a pro 2nd amendment advocate.
I said the most vapid 2nd amendment advocates have a vested interest. I never said they all have the intelligence to recognize that vested interest.
Two, background checks do one thing only and that is cause a hassle for law abiding citizens whos name gets confused with someone who does have a record. A criminal knows they will not be able to buy a gun from an FFL and therefore does not even try.
Only a brain dead fool thinks that many criminals would not attempt to purchase firearms from a dealer if they did not need to prove they were legally able to purchase the firearm. Criminals know they cannot buy from an FFL BECAUSE they know they cannot pass the background check.
And there is no "name confusion" involved with back ground checks. They do not depend on names, but rather SSNs. This is not like the issuse of voter registrations, which do not use SSNs. There is no hassle involved. I have purchased a number of rifles over the years since background checks became mandatory, and the longest I was delayed was about 10 minutes. Most transactions took about 10 minutes total, with 3-5 of those minutes devoted to the background check. I have also purchased several handguns since the Clinton era. The waiting period is fucking stupid.
Three, background checks would be completely unnecessary were the gun laws and justice system actually put to the use that they were advertised as.
The current laws which forbid the sale of firearms to convicted felons would be useless without the ability/requirement to check if the individual in question is a felon or not.
All other gun control laws that are not specifically aimed at the possession of firearms by criminals, are mis-aimed at limiting or interfering with legal possession, and should be eliminated from the books.
The bottom line is the use of background checks is not nearly the hassle you make it out to be. Either that or you are incapable of understanding that the mandatory wait period for the purchase of a handgun (which in essence is the central point of your example case) is a completely different issue from background checks.
I have no problem with using reasonable means to assure a criminal is not purchasing a weapon through legal channels. Background checks, which take no more than 10 minutes, are a reasonable means.