Hello all. I have a question regarding the Sights on XD pistols. A friend of mine has a XD9 service model its a great gun however you must hold at the 6 oclock to hit bullseye. I am looking at an Xd or XDM .45 do all Xd pistol sights require you to hold at 6 o clock? I would perfer not to purchase aftermarket sights. Thanks in advance.