Scorpion Optics has always strived to make life simple. Starting with our Sting Free warranty which takes the hassle out of warranty issues and now our Range. Dial. Shoot. system. This system is so easy to use all you need to do is range your target, turn the dial to the yardage and shoot. It\’s really that simple. With set-up complete in just a few shots it turns any gun into a tack driver. We have many popular calibers pre-cut and in-stock. If your caliber is not listed please order a custom cap.