With the combination of a powerful red laser and a 4-MOA red/green-dot scope, Redfield's CounterStrike Red-Dot Sight is ready for numerous shooting situations. Instantly engage targets with the powerful, integrated laser sight. With 11 illumination settings, the 4-MOA reticle is perfect for ranged targets in multiple light conditions, including use with night vision devices. Precision 1/2-MOA elevation and windage adjustments with tethered dial covers to prevent loss in the field. The CounterStrike is completely sealed and nitrogen-filled for waterproof, fogproof and shockproof performance you can count on. Easy-to-use flip-up lens covers protect lenses from scratches and the elements. Rock-solid mount quickly attaches to your Picatinny rail by tightening a single nut. Powered by a CR-123A battery (included). Runs up to 5,000 hours on low and up to 500 hours on high.