Viridian Weapon Technologies Lyxa 4-16x44mm Rifle Scope 1" Tube SFP is definitely the final result of their tireless efforts to make sure that you will have a durable and dependable scope on your firearm. Designed for the toughest conditions Fully multi-coated HD lenses for peak edge-to-edge clarity and best light transmission possible MOA BDC reticle for precision at any range Nitrogen-purged to prevent moisture accumulation and fogging Zero reset, locking turrets for quick windage and elevation adjustments