My issues with red flag: prior to these laws, if someone is deemed dangerous and/or incompetent, the state appoints an attorney, and the state bears the cost. Under red flag, if I am right, they do neither. So someone says Devildoc is a danger, they come and take my guns. Now I have to hire an attorney and I pay all court costs to prove that I am not a danger. Oh, and I might not get my guns back.
There's a legal debate that they are unconstitutional (eliminates due process), of which I agree.
I absolutely agree that we need to open up mental health resources and push resources back into the schools and communities.
Raising the age to 21? Fine. Then do the same for voting, smoking, and joining the military.