The SLx MD-25 is the most advanced red dot sight that we have ever made.. The core of the sight is its ultra-high-power LED emitter, which projects a clear reticle—even in intense sunlight. The 25mm aperture provides a wide edge-to-edge field of view without a blue tint. Two Night Vision settings make this dot versatile in low-light applications, and the US-made mounting hardware ensures that your dot will stay zeroed through impacts and heavy use. One battery provides 50,000 hours (5.7 years) of use, making this optic perfect for always-on personal defense setups. This version of the Six MD-25 uses a 2MOA dot reticle, but an ACSS 5.56 BDC option is also available for this red dot sight.