Ultra-fast target acquisition, pinpoint accuracy, and wide field of view make Barska's Red Dot Crossbow Scope the ideal for accurate shooting from great distances or close-combat range. Built to withstand harsh environmental conditions, this compact, high-quality hunting scope comes equipped with a 42mm objective lens and Mil-Dot reticle system, allowing the shooter to estimate range without limitations. Each Red Dot Scope has a finger-adjustable rheostat for variable reticle brightness control, anti-reflective coating, and integrated mount for optimum performance. Ergonomic design, unlimited eye relief, and multi-coated optics. Protected by a 1-year, limited warranty.