very good window referred, quite fast and well packed shipment for the price, there is nothing against it dire.par livery with mounting rings which are not suited for mounting on 22 lr, c is to say for rail from 11 to 13 mm.mais nothing serious are found partout.pour mounting 22 lr, take 25.4mm diameter rings 11 and rail 13 mm donc.fournie with an installed battery in the frame and a replacement in the box, what do you expect ????