The glint only shows up with long range scopes.
Getting to snipe without giving away your location is really good and the medium range scopes work just fine.
Long range scopes have better zoom (can see far away targets clearly), but have a scope glint which allows other players to spot you easily.
Medium scopes are not that zoomed in (you will mostly see just dots moving very far away), but has the advantage of not having scope glints meaning it will be very difficult for other players to spot you if you position yourself correctly.
What ranges are we talking about? Like, would 3x be considered long range? That’s good for something like 300 yards, right?