Aimed to take your shooting experience to a higher level, the SPECTRA riflescope lineup offers precise, reliable, high-performance features for diverse hunting and shooting scenarios. All SPECTRA riflescopes offer a 30mm main tube that provides larger internal optical lenses fully multicoated with proprietary GPObright lens coating technology, iCONTROL illumination electronics, a variety of magnification zoom ranges, and an assortment of reticles that are sure to meet your needs. All GPO products are backed by the best lifetime warranty and service in the industry, our exclusive Spectacular Lifetime Warranty.