So I've been looking at my Mossberg ATR alot lately, trying to think of a project idea for it. I know that some Rem 700s have a hinged floorplate and you can get conversions to let them accept detachable magazines. This led a bit of surfing the web and I know Mossberg made a centerfire much like the ATR called the 4x4. The 4x4 comes standard with a DM. This makes me really want to try to modify the ATR (I'm not worried about screwing up the cheap stock on it) Has anyone done something like this before? Is it something that would be easy to do? I love projects and this is really just about seeing if I can do it Comments, questions, concerns?