Designed to be used in conjunction with a traditional optic, the MilSight S135 gives the shooter the ability to have night vision while retaining the reticle they would typically use. The left side of the optic body houses the gain knob (turning powers the optic on and off), the rear knob adjusts focus, and the right has the battery housing. The optic currently sits on a LaRue mount marked "DM/3955" on the bottom. Includes a nylon carry bag.