Recon scope

 is a weapon mod in Fallout 4.

Overview
The recon scope is a tactical tool, allowing the operator to mark enemies in combat. The scope then automatically tracks their position, transmitting them to the operator's heads-up display.

In game terms, the recon scope will mark enemies when aiming down the sights. These markers will be displayed on the compass and persist even if the enemy breaks line of sight or otherwise takes cover.

Location

 * Top level optics for all ranged weapons, except heavy ones.