Several years ago, I spent a great deal of time working with politicians to improve on some industry-related legislation. It was not gun-related but very emotional nonetheless. I learned a lot, and from that experience I am a strong advocate for emailing or phoning your legislator and let them know how you feel about a certain issue.
I saw legislators change their postion based on the number of phone calls that came into their office, their change favored the response of the calls. I heard from them, "My phone has been ringing off the wall"!!!!! IT DOES MAKE A STRONG IMPRESSION ON THEM.
It's easy to get their office phone number and/or email address. Call their office and tell them what you think about regarding some current issue or bill (very helpful to cite the bill, i.e. SB303). Be respectful and to the point, remind them that you are a registered voter in their district (at least I hope you are).
Granted, we all know the stories about them speaking out of both sides of their mouths, and some of them will never budge from some issue you don't like. Those are not good enough reasons not to call, the politicians do pay close attention to calls and emails, it's sort of like an incoming poll to them.
If you feel your legislator is hopeless and on opposite ends of the pole from you, that is even more reason why you need to call them. A squeaky wheel gets the grease.
Calling or emailing them is essentially free and very very effective. Encourage your friends, relatives and co-worker to do the same. I've seen it at work !
Monday I'll be calling both of my rep and senators and my message will be short and sweet. I will let them know my concerns and suspicions of this UN treaty and how I don't expect it to interfere with my 2A rights whatsoever. Secondly, I will be solidly against any useless gun laws that might come out of this latest shooting in Colorado.
Here are some tips on contacting your legislators.
NRA-ILA | Write Your Reps
Also, if you haven't already, join some pro-gun group. There is strength in numbers.
Long ago, when I was a kid, I saw an editorial cartoon and a angry/weary-looking American Revolutionary soldier (with musket in hand) was looking at me and said, "You didn't vote? What if I hadn't fought? ". It made an impression on me that remains today.