I usually have a M4A1 CCO SD in my backpack. For Zeds n' such. Then I something a little more long range, Dmr or m107.. something along those lines. Unless I find a L85A2 AWS.. this trumps any long range rifle I might find.
I went as a dayz survivor to a costume party. But first I had to assemble the gear. http://tinyurl.com/akl6qpy I think it turned out pretty well. *edit* Here is one of the shots of the costume http://tinyurl.com/bug3pvp