Rarely used Eotech XR308, ballistically rated for 7.62x51; .308. Now discontinued, and getting more uncommon to find. Takes two AA batteries. The display is bright and clear of any scratches. The outer housing is also scuff free as it has been well taken care of. Come with original case, and manual. Purchased last year through Optics Planet for $750. Selling because I'm going a diffrent route for my .308 and need money for a EXPS4.