I used to shoot competitive matches with rack grade M16A2 rifles when I was on my State National Guard Rifle Team.
Green tip ammo sucks. Every couple hundred rounds there’s a complete flyer. Sight picture good, break good, finish good, no hit on target.
I had a complete miss on a 10 ring target that cost me the Chief’s 50 badge at the Wilson match in Arkansas. I missed Chief’s 50 by 2 points and that shot broke as a called 10 by me. I’d never buy green tip.
My go to handload now is 75gr Hornady HPBT match with a Winchester case, Varget, and a CCI bench rest primer.
Military ammo is meant to be shot in vast quantities mainly to keep the other guys heads down. Chasing accuracy or quality beyond a certain point is not productive.