Ultimate sight for both Close Quarter battle (CQB) situations and longer distance shooting where accuracy and pinpoint bullet placement are required; Trijicon is the first to market with its unique dark earth brown color * This dual-sighting system gives the shooter a distinct tactical advantage with the option of either the Trijicon ACOG or the Trijicon Ruggedized Miniature Reflex * No tools needed for windage and elevation adjustments because the ECOS also features external windage and elevation adjusters, making it waterproof up to 11m without caps * Includes 3.25 MOA Ruggedized Miniature Reflex Sight 1 A.R.M.S. Throw Lever Mount 1 Set of backup Iron Sights 1 Lenspen (LENSPEN) 1 Trijicon Logo Sticker (PR15) 1 ACOG Manual 1 Warranty Card * With 3.25 MOA Ruggedized Miniature Reflex Sight, Backup Iron Sights, ARMS Throw-lever mount and Dust cover