Shield Sights Compact Shield Mini Red Dot Sight 4 MOA Dot Reticle SMSC-4MOA Glass Lens Black. It is the perfect option for small single-stack pistols and everyday carry options and its iconic minimalist design allows shooters to co-witness with standard iron sights further improving accuracy. It has a battery life of 2 to 3 years so you don't have to worry about the sight failing you when you need it most. Plus the variety of illumination settings makes the Compact Shield Mini compatible with night vision at the lowest setting and visible against the sun during the day on the brightest setting. You can't go wrong with the versatility and strength of this red dot sight so pick one up today Specifications for Shield Sights SMSc Compact Shield 1x21.85mm Mini Reflex Red Dot Sight: Manufacturer: Shield Sights Magnification: 1 x Illumination Type: LED Illumination Color: Red Eye Relief: Unlimited Adjustment Type: MOA Adjustment Click Value: 1 MOA Emitter Type: Open Weight: 0.61 oz Condition: New Condition Quality: Excellent Condition Details: Other Quantity: 1 Features of Shield Sights SMSc Compact Shield 1x21.85mm Mini Reflex Red Dot Sight Mounts to SHIELDs famous footprint. Utilizes SHIELDs patented mechanism enabling co-witnessing with standard iron sights considerably reducing training times and costs. The mechanism uses no click adjustment making it infinitely more accurate when zeroing. Crafted from reinforced nylon glass-filled polymer Auto brightness adjustment so it can always be on and ready. Package Contents: Shield Sights SMSc Compact Shield 1x21.85mm Mini Reflex Red Dot Sight Shield Sights SMSc-4MOA-GLASS: Compact Shield Mini Red Dot Sight 4 MOA Dot Reticle SMSC-4MOA Glass Lens Black