The STS2 is the smallest C-MORE available. It's compact design and multitude of features makes it a great choice for any application. Many STS2 mounting solutions are available, including a weaver/pica tinny rail mount, dovetail mounting kits for direct slide mounting on popular hand guns and scope tube mounts for mounting to your telescopic scopes. Just like our competition sights, the STS2 head up display provides an unobstructed sight picture in which the red dot hovers on the sight line, illuminating the point of impact on the target, creating the fastest target acquisition in existence and unlimited eye relief. Similarly it uses a beam-splitter lens made of glass. hard coated for maximum scratch resistance and light transmission, while the parallax free design enables targets to be acquired without the need to center he dot in the lens. The STS2 uses a CR2032, lithium battery that is contained within a removable battery tray, which permits battery replacement without dismounting the sight and is O-ring sealed for waterproofing. this eliminates the need for re-zeroing when replacing a battery. A 10-position push button switch provides manual intensity adjustment. automatic return to the previous brightness setting on start up. and an off position. The STS2 provides 1 moa click adjustments for windage and elevation resulting in pinpoint accuracy. A positive locking screw for both windage and elevation lock the adjustment screws in position..