The best just got better.  The 518 runs on easy to find AA batteries but offers all of the features found in EOTech&rsquos EXPS top of the line sight. With side button functionality you can reduce rail space when partnering the 518 with an EOTech magnifier.  The 518 is also compatible with the new drop-in Laser Battery Caps that EOTech designed to enhance aiming through the use of visible and IR lasers.

• Length/Width/Height: 5.6&rdquo x 2.2&rdquo x 2.9&rdquo (142.3 x 55.9 x 73.7 mm)
• Weight: 13.8oz (391.2 g)
• Water Resistant: Submersible to 10 ft. (3 m) depth
• Mount: 1&rdquo Weaver or MIL-STD-1913 rail
• Brightness: 20 daylight settings
• Power Source:
  Two 1.5 V AA batteries
  Supports lithium, alkaline, or rechargeable
• Battery Life:
  Lithium: 1,000 continuous hours at nominal setting 12 and room temp.
  AA alkaline: 600 continuous hours at nominal setting 12 and room temp.