I have that upper... it is the most accurate I've ever personally seen or shot. I had them put the SPR barrel instead of the mid.
Absolutely pleasure to fire and the recoil pulse is smooth as butter.
...Slow, deep breath in followed by two quick, shallow exhales, then one long breath out. It should sound like "HEE HEE HOOOOOOOOooooooo...HEE HEE HOOOOOOOOooooooo". Once your comfortable with that breathing pattern, try to sync the tempo up with your heart rate. "Lub-dub...HEE HEE HOOOOOOOOooooooo... etc". ~ CBruce