Thanks for the help! One more question, I want/need to zero my MBUS sights, but am unsure how. I am used to zeroing with the M16 A2, which has the elevation knob, in addition to the windage, whereas the MBUS only have windage. I'd like to go with the Army 25 meter zero (it's what I'm used to). Do I just place a target at 25m and make sure POA and POI are the same?