Things I liked:Pyramid Air's service is outstanding . I order often anf this is not a one time deal. The scope is crisp and clear. I had to remount it and follow the instructions from a video on to allow for proper sight ajustment.I mounted it on a Ruger Air Magnum .177. locked it down.The Red and Green Illumination is great, it brings the range and location so much quicker and easier to pick up. Still at 10-15 yards . Will open it up this spring. And yeah It makes the Ruger a Tack driver. and a Wicked looking Air Gun Things I would have changed: End caps I just take them off when shooting What others should know:Just check that you have place the illumination setting to an off position to conserve battery.