The German Precision Optics (GPO) Spectra 5X 3-15x56i riflescope is billed by the company as "the ultimate low-light, high-performance riflescope."
The Spectra 3-15x56i’s beefy 56 mm objective lens system transmits a large amount of light to your eye, while the 3-15x variable power range provides plenty of magnification for both close- and long-range shots. Eye relief is 3.75 mm, and field-of-view at 100 yards is 34 feet.
A proprietary coating process called GPObright maximizes light transmission through each surface of an optical element—up to 99.7 percent of the available light.
PASSIONtrac turrets are designed for 0.36-inch adjustment at 100 yards (or 0.1 mrad), and provide 90 inches of adjustment range. In addition, custom turrets are available.
Users will always have a live battery thanks to the iControl system, which automatically powers down the illumination when the electronic module has been stationary for more than 3 hours, and also alerts users when the battery has only 15 percent remaining battery life. It also offers bright, fiber-optic technology.