Julian, I appreciate the offer, but I doubt it'll be necessary.
I have an M-16A2 that I'll use first. When I zeroed it, I put 3 shots you could have covered with a nickel on the paper. After adjustments, I put 3 more shots just like it right outside the circle. One more adjustment and I put 9 shots in the center. (I only had to put 6, but I did 3 extra just for **** and giggles).
I am just as accurate with the 9MM inside 25 yds. I don't want to mess with perfection. :^)
'Sides, uncle sammy frowns on us modifying his weapons.