The Nikon 6460 1 x 20 Buckmasters blackpowder matte riflescope is a rugged, waterproof, shockproof and fogproof scope. Put through an advanced vacuum process that removes virtually all air and water molecules, the scope's tube is then filled with nitrogen and O-ring sealed. This process ensures that the Nikon 6460 will perform under the most stringent of field conditions without suffering any effects of fogging or condensation.

The precision-ground and polished optical glass is coated with Nikon's exclusive Brightvue coating that allows for 92 percent light transmission, giving you super clarity and high resolution. Manual 0.5 MOA (minute of angle) reticle adjustments eliminate reticle creep or backlash. The scope features a 1x magnification (meaning no magnification) and a large, 20 millimeter objective lens diameter, giving the scope an exit pupil size of 20 millimeters. The Nikon 6460 is a full-sized scope with a large exit pupil, making it an excellent choice for timber, brush and low light.

About Exit Pupil Size
The size of the exit pupil for a riflescope is determined by dividing the objective lens diameter by the magnification rating. The human eye pupil diameter ranges from 2-7 millimeters, depending on the amount of light. For proper light gathering potential, the diameter of the scope's exit pupil must be equal to or greater than the diameter of your eye pupil at the light level you will be using the scope. If you're working in low light, your exit pupil size will be of greater importance. With a 20 millimeter exit pupil, the Nikon 6460 1 x 20 Buckmasters blackpowder matte riflescope is an excellent choice for hunting in low light.