The Immersive Optics 10x40 day scope offers high accuracy shooting within a highly compact format. Using a prism based optical system, the 10x40 s size can be immediately reduced, eliminating a traditionally large objective lens and exceedingly long housing & eye-relief. This is done without sacrificing the scopes light-gathering performance, field of view or magnification. The implementation of this new prismatic design not only allows the 10x40to maintain a high optical output and a minimal size, but also a reduced bulk and weight, which results in a better balance for whichever shooting platform the scope is mounted on. This optimisation means that a shooter can aim for longer without fatiguing. Offers up to 4x wider field of view when compared to traditional sights and can focus down to a distance of 6m for close-range shooting. The 10x40has a glass-etched illuminated mildot or mildot rapid reticle (see individual models), high precision windage & elevation controls (no parallax) and comes with a MOA adjustable mount. This scope is fitted with ED (Extra-Low Dispersion) glass which helps to maintain natural colour reproduction within the observable field of view, minimising chromatic aberration (colour fringing), resulting in high clarity, picture-perfect results even at long distances. All Immersive Optics day scopes feature an innovative eye-relief and lens cap retention system which allows these aspects to be quickly and easily held securely out of the way. All Immersive Optics scopes have CNC machined housings for zero-errors, with optical channels being nitrogen-filled for anti-fogging and sealed against water for maximum quality of use. This optic can be used with rifles with moderate to no recoil, a great choice for airgun shooters.