Noticed a good feature, goods under the brand ohhunt are more high-quality. The trading company is more closely controlled by manufacturers. The sight is good, but there is one moment. After adjusting the diopter, a slit and a small backlash appear on the eyepiece. I recommend just a tight shake this slit thread and the offset of STP will not. If the diopter setting is not required and the eyepiece remains completely screwed, then the winding is not necessary. The seller equipped the sight with two types of rings, 21 and 11mm. Comfortable mesh (Mil, half). Paralyx is competent. Can be used both on cylinder pneumatic and 22LR, 223 rem. I plan to drive him 308. Don't forget that piston pneumatic, it's the killer of any optical sights!