I strongly recommend telling them that you are interested in the second amendment. If you are indeed interested in presenting other issues, you'd best to that at another time. Keep the focus of these meetings very narrow. Be one-minded at each meeting. If need be, just use verbiage such as "my purpose at this meeting today is to discuss second amendment rights and gun control issues in Illinois, and specifically, how this county views the issues at play."
Don't fall for anyone's ploy to distract you....don't let them ask you about the constitution and gay rights, for example, or abortion, or taxation, or any number of other admittedly important issues....they are tangential, because those issues are not under discussion. The second amendment is the issue for why you are there. It might be that those in favor of gun control in general will try to distract you to other issues you are less familiar with, in the hopes that you will bumble around and appear uninformed. Demand that focus remain on the 2A...when you have the floor, you are in charge. And when someone else takes the floor and asks you a question about the tangential issue, you say "we are here to discuss second amendment rights and gun control issues in Illinois, and specifically, how this county views the issues at play. Discussion of other topics are counterproductive toward resolving the issue at hand."