Here you go... I made reference to the Luby's Cafeteria massacre in Texas in 1991, a nice touch I thought.
Hello,
My name is ........, and I have been a big supporter of Skyline Chili my whole life.
I recently went to Skyline with my friends for a meal. As we walked in, we noticed a no firearms sign on the door. I am licensed to carry a concealed firearm, and had to return to my car and lock my gun away. Concealed Carry is a very important issue to me, and I believe that law abiding citizens should not be restricted. I am trained, had an FBI background check, and I'm licensed in the state to carry. A "No Gun" sign will not stop a criminal. It only restricts, and endangers the law abiding citizens.
I am old enough to remember the massacre at Luby's Cafeteria in 1991. You can look it up here:
http://en.wikipedia.org/wiki/Luby's_massacre
On October 16, 1991, 35-year-old George "Jo Jo" Pierre Hennard, an unemployed merchant mariner or able seaman who was described by others as angry and withdrawn, with a dislike of women, drove his blue 1987 Ford Ranger pickup truck through the front window of a Luby's cafeteria at 1705 East Central Texas Expressway in Killeen. Yelling "This is what Bell County did to me!", Hennard then opened fire on its patrons and staff with a Glock 17 pistol and, later, a Ruger P89. He stalked, shot, and killed 23 people while wounding another 20 before committing suicide.
I will not eat a an establishment that restricts my 2nd Amendment Rights.
Skyline may be prudent to review your potential liability by placing such a sign in your window.
Thank you for your time, and I look forward to hearing from you.