many people ask me why i spent 90 dollars on flip up sights but they are sooo worth it. other sights go for around 45$ each anyway and these are much cooler and inventive. i usually play night games and red dots mess up the vision because they get fogged up or glare gets in the way or even running out of batteries in the heat of battle.
If your a magpul fan definately get these sights
loosening and tightening the screw doesnt really help putting the sights on. you have to kinda force them on.