Steiner Binoculars 9412 AN/PVS-21 Refocus Lens

Night Vision Refocus Lenses are innovative accessories providing operators the ability to rapidly refocus their night vision view from infinity to approximately 24 inches. This allows the operator to perform momentary close-in tasks such as map-reading or weapon clearing. The operator can then instantly return the NVG to infinity by flipping the lens back to its storage position.