Elevation is done with your front sight, push the detent down and spin the front sight post. They make a tool but you can use a bullet to do it. Clockwise brings groups up, counter clockwise brings groups down.
thankyou so much! i didn't even notice that thing at the range the other day and i was always shooting high. i noticed it when i was takin these pics yesterday but wasn't for sure thats what it did. thanks