ADE Advanced Optics Delta 6 MOA Waterproof Red Dot Sight for Precision (Black)The ADE Advanced Optics Delta red dot sight with 6 MOA promotes rapid target acquisition while providing a precise point of aim; getting shots down range and on target fast. The aluminum housing ensures this unit will stand up to whatever you throw at it. Top load system, no need to remove the sight to change the battery. Multiple Uses Can also be used with a long range rifle scope for that perfect backup system. The lowest setting is invisible to the