This one actually sounds reasonable considering where we are at today and what we currently have.
From my understanding, if you committed some crimes as a juvenile, your record is expunged once you turn 18 and you have a clean slate. If I recall correctly, a lot of these killers have had previous problems but were allowed to purchase a firearm due to their clean record when they turned 18. Moving forward they will no longer give you a clean slate when you are 18 and now these previous juvenile offenses will still be on your record for NCIS to see and deny you a firearm purchase.
Call me responsible, but I never understood the clean slate at 18 anyway.
IF all the states would agree to drop their own background check systems and we as a country relied on one background check system, I could go along with the removal of the clean slate. I would also require the BGC system to be able to be accessed at any government office for free so that private sales can be conducted easily and safely.