Eotech 518.A65 Black Sight 518A65The Eotech 518.A65 Black Sight runs on easy to find AA batteries but offers all of the features found in EOTech�s 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. Features of the Eotech 518.A65 Black SightSide-button design mates close w/magnifier (sold separately) to reduce rail space Quick-detach lever mount fits 1" Weaver or MIL-STD 1913 rail Water-resistance: 10 ft. Powered by (2) 1.5V AA batteries (supports alkaline or lithium) Lithium/Alkaline Battery Life (continuous hours): 1000/600 Magnifier & Laser Battery Cap (LBC) CompatibleProduct Specifications for the Eotech 518.A65 Black SightFinish: Non-reflective Black FinishReticle: 68 MOA ring w/1 MOA dotSize: 5.6" x 2.2" x 2.9" Wt.: 13.8 oz.