I've been following a lot on Iran's weapons.

Iranian made S-300s?
Iranian made Hawk missiles?
Iranian made attack helicopters?
Iranian made night-vision?

These are just pictures. No proof Iran produces any of these. Looks to me like Iran just colored a lot of their weapons they already had.

Any proof Iran makes these themselves?

no one claims that Iran makes S-300s!

Oops. I meant s-200.
I saw a picture that Iran produces the missiles for these. I saw no other information about it. No proof that they produce them. Just a picture of one.

I think most of what Iran produces is for show and no go.

Even the tanks. Most of them are just modified tanks.

you can think whatever you want to think.