Silly questions but I'm not sure on this so I figured, when in doubt, ask. I'm awaiting delivery on a Stag 3h that has an A2 stock on it and I'm going to replace it with a 6 point M4 stock. First off, what makes/models should I stay away from (cheap quality) and what is the process for replacing the stock? Do I need any special adapter or the like? Wanted to get a jump on it by ordering the stock so I can swap it out when it comes in. Been picking up some odds and ends as I wait, flip up sights, mags etc. Thanks!