Fortunately, reasoning with Moxxie is probably the best course of action here. Less chance of the gun going off accidentally, and he's already questioning things.

"Yeah..." He lowers the gun. "I'm...uh...guessing these are something different."

Well, that's awkward, and now the owl that had been showing him around before he pulled that stunt is ranting at him about the whole thing, but Moxxie isn't really listening. It doesn't really matter, either, because he's already realizing it was a mistake.