D42HV56WFIMA (FFP • Tactical • LOCKING TURRETS)

Multi-turn 25 MOA elevation turret with 130 MOA total travel adjustment for ELR. Locking elevation, windage and parallax with easy zero stop. Fast focus diopter system will enable you to adjust from -2D to +2D in 1 revolution. Eyepiece diopter can be rapidly adjusted.
 

March-FX 5-42x56mm Wide Angle employs "Temperature Anti-Drift Lens System" and the "High Master lens system". 

In the latest optical systems, a new lens material has been developed to accommodate changes in environmental temperature by altering the refractive index of the lenses. This new lens material has been adopted to create a more stable lens system that naturally adapts to changes in temperature to maintain focus and clarity over a wide range of conditions.

Super ED lenses are an improved ED lens element with optical characteristics even closer to pure fluorite crystal lens elements. By incorporating Super ED lenses (High Master lens system), we are able to reduce the chromatic aberration.

 Because of the very wide adjustment range of this riflescope, you may experience some image quality degradation as you near the limits of the adjustment range. This can occur because of the extreme refraction of the incoming light at the edges of the objective lens. This degradation will worsen as the magnification increases but if you readjust the focus turret each time, you will be able to see the image clearly. In case you do not wish to adjust each time, we recommend using an appropriate canted rail if you plan to use this riflescope consistently near the limits of the adjustment range and at higher magnification. It can be utilized to gain additional elevation and to keep the scope optically centered as much as possible. Please check our Support page for further information. https://marchscopes.com/support/  

If you are looking for a scope with large elevation travel amount and perfect IQ throughout the range, we recommend you 6-60x56Genesis (114MIL, 400MOA) and 4-40x52 (86MIL, 300MOA) Genesis scopes. When you turn the elevation or windage turret on the Genesis, the entire riflescope tube is canted. This unique design allows you to always look through the central part of the lens resulting in perfect image quality, regardless of the windage or elevation applied to the riflescope. (Link to the product pages of 6-60x56 Genesis: https://marchscopes.com/scopes/d60v56gfiml-2/, 4-40x52: Genesis https://marchscopes.com/scopes/d40v52gfiml-3/)