This is a covertech wheel attachment for the Survivor hilt. The small kit comes with: -anodized black aluminum machined covertech wheel -replacement aluminum bar with goes in place of one of the plates that cover the 3 screws on one side -two slotted M3 screws -one allen head M3 screw (black)
The covertech wheel itself is 18.4mm wide, with a 2mm inner slot for covertech clips.
To install this covertech, simply replace the standard small plate that comes with the Survivor hilt with the aluminum one provided with this assembly. Thread in the two slotted screws on the outer holes, which should sit flush. Thread in the black allen head screw over the covertech wheel.