"Sweet Series Scopes: This family uses trajectory compensation technology that was originally designed for the military sniper. However these hot new scopes are catching on Fast with Varmint and Target hunters. They feature a quick change turret system specially calibrated for multiple grain weights for the calibers: .17HMR, .22LR, .223, .243, .270, .30-06. The Windage and Elevation turrets have zero reset with an Allen screw. Each model in the Sweet 17 series have an adjustable parallax setting of 10 to infinity, with the exception of the model S17-27x32 which is 7.5 to infinity Hot New Scope! The zoom ring has an inner drum with markings, and a fixed inner ring with a window cutout. Only the outer ring and markings will turn when adjusted. The window is always facing the shooter|Calibrated for the .17 HMR.|Side Parallax Adjustments|Turret calibrated for .17 / 17hmr and .20gr.|Limited Lifetime Warranty.|Export of this product outside of the United States of America is not allowed and is controlled by the US Department of State"