Anybody have ane experience with either a Trijicon RMR or a Burris Fast Fire II on a pistol? I have a XD 9mm that I would like to try one on. I shot a buck mark with the Burris on it and liked it but I had to hold it in what felt like an un-natural possition to see the dot as in I couldnt just bring it up the way I normaly would to use the iron's almost like I had to tilt the muzzle down but it did hit the target just fine. Was it just that gun or is that what to expect?