Night Optics Day-to-Night Adapter, PVS-14 NO-NA-DN2 is a part of the high quality and dependable Night Vision Accessories from Night Optics. All of the features you need for a price you want. Night Vision Accessories from Night Optics are well known for their quality and Night Optics Day-to-Night Adapter, PVS-14 NO-NA-DN2 upholds that standard.