"By delusional and by the guns thing Im trying to say the are retarded, lack critical thinking, and are very close minded"
If you don't think it's possible to have difficult arguments against positions you hold, then you're probably pretty bad at playing devil's advocate, which would suggest something about your reasoning. Ironically, more so than just the fact that someone doesn't want gun control.
Not to mention that you can have extremely intelligent yet delusional people, like Bobby Fischer.