The FastFire Red Dot Reflex sight is the most versatile red dot sight on the market. Mount it on your favorite handgun shotgun or hunting rifle for greater accuracy and faster target acquisition. You wont need to worry about sight alignment eye dominance or finding your target. Just put the red dot on your target and pull the trigger. Compact and lightweight the FastFire wont affect the balance or handling plus it offers unlimited eye relief parallax-free 1x magnification and simple operation. the new FastFire III with 3 MOA or 8 MOA dots. - Specifications and Features: - Magnification: 1.07x - Sight Window: .82x.59 - Elevation Adjust Range: 3 or 190 at 100 yds - Windage Adjust Range: 3 or 190 at 100 yds - Set Value for one Scale Division: 1 MOA - Subtension of the Aiming Dot: 4 MOA - Parallax-Free Sighting Distance: Approx. 50 yards - Recoil Resistance: At least 1000 G's - Operating Temperature Range:-10F to +130F - Power Supply: 3V with one CR 2032 Lithium battery - Dimensions: 1.8 x1x 0.9 - Weight: 25g