Ultra Light. Reliable. Unerring Accuracy. The Carolina Foxfire TP Deluxe comes factory equipped with the Foxfire Sight Light that dramatically illuminates the pins without producing unwanted glare. The patent pending vertical adjustment mechanism, along with laser-etched match marks will provide fast, trouble free no-tool setup. At the shot, the hunter will be amazed by the patent pending contrast ring which employs spectral distribution technology to help you automatically align the peep with the sight ring effortlessly!