Might be PG if you're lucky. Mild swearing (aka talking like a 5years old that never watched a second of TV, has no access to the Internet and isn't allowed to leave the basement) and indicating the act of violence (or directly stating a fact as in -X shot Y-) sure are alright. You don't dare to try being more graphical even in those harmless descriptions though. On the other hand, abuse of medicaments and slavery are alright if not depicted in utmost detail.