At any rate, I certainly wouldn't refuse to sell an article from a store I owned to anyone. Unless, like the florists or the bakers, they were asking me to design something that conflicted with my ethics. Selling a firearm to a homosexual (if somehow I could determine they were homos) would not bother me in the slightest.
And yes, I'm against homo marriage, homo adoption, and I believe homosexuality is a mental disorder.