Well, I agree with 2/3.
First, I agree that the bumpstocks should be banned. I disagree that they should be banned by executive order (as is currently in process), I think they should be banned by a law.
Second, I think the gun purchase age of all guns (including handguns) should be 18. I also think the drinking age should be reduced to 18.
Third, I agree, and I also think that the states (and military) should agree to report all judicial actions that are counter to legal gun usage to the NICS. At the current time, that should include those who use medical or recreational marijuana.