A Ghost Ring is a type of ironsight, obscuring targets less than nearly all other non-optical sights. Because of this, ghost ring sights are commonly installed on combat shotguns and sub-machine guns.
The thin ring minimizes the occlusion of the target, while the thicker front post makes it easy to find quickly.
The Ghost Ring is an optical accessory for the Handguns. It was first seen during live gameplay at E3 2013. The attachment replaces the standard iron sights of the pistol with an illuminated ring.