English, About Red Dot Lens Positioning | Bushnell 731309, AR731306

ENGLISH

The Bushnell® TRS-25 is a small, light and rugged red dot sight, designed for use on shotguns, rifles and handguns. It is constructed and assembled by highly skilled craftsmen to Bushnell’s high quality standards. The precision and craftsmanship with which this scope was built ensures its performance under demanding conditions. This scope will provide the shooting accuracy and repeatability which have made Bushnell legendary.

This sight can be easily used with both eyes open (eye relief is unlimited), increasing the shooter's awareness of the surrounding environment and providing faster target acquisition. There is no need for centering, due to the parallax free design in which the dot follows the movement of the user’s eye while remaining fixed on the target. The TRS-25 delivers full size performance in a sight with reduced size and low power consumption.

The model# AR731306/AR731306C versions of the TRS-25 include a tall riser block (D, pg. 2) to position the sight at an optimum height on AR-15 flat tops or tactical shotguns.

About Red Dot Lens Positioning

All red dot sights have an objective lens at the front of the unit that is spherical in shape. However, unlike a conventional riflescope with all lenses mounted perpendicular (at a 90 degree angle) to the axis of the tube, the objective lens in a red dot sight is positioned off axis and appears to be tilted when looking at the sight (see below). This angle of the front lens allows the light generated by the battery powered LED light source inside the unit to be reflected back into the sight. The reflected light becomes the “dot” or aiming reference that the shooter sees when a red dot sight is switched on. This engineered “bending” of light is what makes today’s red-dot sights so popular and easy to use.