Hey new here, just curious if any of you have the same setup. will I need a riser and if so what size? If it will bolt right on and cowitness cool, if it will be over the front sight post that is cool too. I just don't want the red dot to be to low. I am mounting a Truglo red dot http://www.truglo.com/IW_Products.m4p.pvx?;MULTI_ITEM_SUBMIT to a Stag 15 model 2 http://www.stagarms.com/product_info.php?cPath=13_22&products_id=206 Thanks!!