Sights

Sights are attachments in Notoriety which improve your accuracy and gives you a dot, letting you know what it is that you are shooting. They have various accuracy buffs at the cost of lower concealment. Reflex Scope= The Reflex scope is a scope that costs $12,000 while having a red-dot sight in the middle, while having curved walls on the side of the scope. It is usually not used by players due to having the lowest accuracy boost in the game, along with taking away a bit of concealment, but the scope has recently been used by players, due to its non-obstructive walls and a dot at the middle.
 * -|EOTech Scope=

The EOTech scope is a scope that costs $43,000 that unlike the reflex scope, has straight walls at the sides, and curved edges. It has a good accuracy boost, while removing 4 concealment. For some players, this scope's walls can be a bit obstructive and can be bothersome to some with the dot sight, so some players use a different scope.
 * -|Kobra Scope=

The Kobra Scope is a scope that costs $30,000 that like the reflex scope, has curved edges and walls, but unlike it, it is a circle at the sight. It it usually unused by players because of its bit higher concealment decrease unlike the EOTech scope.The sight has 3/4ths of a crosshair at the middle, making players know where to land their shots a bit more easily like the Reflex Scope.
 * -|HAMR Scope=

The HAMR Scope is a scope that costs $56,000, making it the 2nd most expensive sight in the game behind the ACOG scope. It also has a circular shape, like the Kobra Scope. It is also unused by players because of its price and concealment decrease, but has the 2nd best accuracy boost in the game, behind the ACOG Scope. The sight, like the Reflex Scope, is also a red dot, making aiming a bit easier.
 * -|ACOG Scope=

The ACOG Scope is a scope that costs $97,000, currently the most expensive sight in the game. Like the HAMR and Reflex scope, it has a circular shape. It is also unused by players, possibly due to its obstructive view on the scope and has the highest concealment reduction in the game, despite it having the highest accuracy boost in the game. The scope also has crosshair sight like the Kobra Scope, making landing shots a bit easier if it suits the player.

Conclusion
Overall, it comes down to a matter of taste of which scope the player wants to have. If the player wants a stealth build, they might look up to the lower concealment reducing ones. In a loud build, they might look up to higher accuracy ones, though some of them can be obstructive for some players.