>Which can't be renewed and can never be bought again

You have to renew your med card annually so you can. Additionally its a gray area but if your med card is not for treating a mental health issue there is some room although still a gray area. Licenses are denied because of mental health not because of specifically use of cannabis although it can still be used to discriminate.

>Also it's technically illegal I believe to even own the gun if you are a user. So if you have guns, and are high etc that can be an issue.

It's not. It's a legal gray area (not a lawyer) again specifically since we do discriminate firearm purchases for mental health discrepancies not because you are high and then irresponsible.

>If you use weed no matter how, you then have to say yes on the form and be denied

Just blatantly false information.

>So you will give up your right to ever buy a gun again.

You can renew your firearm license when your mmj card expires although you will probably still be flagged and most likely have to go through different channels to update this information.

>Then I believe that only applies to the form and you can get them at the good ol' Gun show. private party etc (non straw of course)

You have to register all purchases whether you buy from a big box or from a gun show or private owner. It's illegal otherwise and the original owner would be holding themselves severely liable if that were to happen since they can literally trace it back to you. I have gone to plenty of gun shows in the past and I've had to fill out paperwork all the time to register my purchase and their transfer.