Based upon the original Sure-Loc Lite sight, the Supreme features the no-lock design with patented accurate tracking system that always stays exactly where you set it. This sight is 12% lighter in weight and the new elevation block design increases resistance to the effects of high vibration environments. The Supreme features micro-adjustability in .002" increments for elevation and windage. The Supreme is designed with a push-button release for smooth rapid-travel elevation adjustment. The split-block allows for rapid removal and reattachment of your aperture and makes using a Sure-Loc a breeze.