The FX Tactical 5-42x56mm Riflescope by March Scopes was designed to meet the demands of hardcore hunters, competition shooters, and other serious enthusiasts who needed a scope with the utmost optical and mechanical performance. This precise optical instrument features 8 magnification ratios, including one of the highest first focal plane magnification ratios ever made. The FX Tactical 5-42x56mm also comes equipped with March's Temperature Anti-Drift Lens System which incorporates a new lens material to accommodate changes in environmental temperature by altering the refractive index of the lenses. This results in a more stable lens system which naturally adapts to changes in temperature to better maintain focus and clarity. Another notable feature of the FX Tactical 5-42x56mm is the 0-set device in the elevation turret, which allows the shooter to set any position as zero point and make adjustments without losing the zeroing. Features of the FX Tactical 5-42x56mm: Exposed windage and elevation turrets 0-set device in elevation turret Temperature Anti-Drift Lens System March Scopes March FX Tactical 5-42x56mm G2 FFP FMA-3 Reticle 1/4MOA 6Level Illum Riflescope D42HV56WFIMAX-G2-FMA-3