Glad I took today off. It was a great day for shooting, and I spent a few hours all by my lonesome punching 5.56mm holes in paper plates. I even saved some ammo for tomorrow! I'm not sure I have the Aimpoint mounted properly. The dot seems to shift slightly in relation to the front sight post after firing a couple of rounds. Then after a minute or so, if I look again, it's shifted back. Could it be that my barrel is shifting POI slightly between a cold bore and three rounds later? Don't think I can screw Ms. Aimpoint down in the ARMS mount any tighter without breaking something! Oh, and Ms. 6920 has thus far functioned like a champ. As expected.