The Crimson Trace HorizonLine 4000 brings Best-In-Class quality into the palm of your hand. With an illuminated easy-use menu, quick acquisition features and CT quality optics. With a max range of 4,000 yards, there is no target you wont range. Robust internals wrapped in aerospace aluminum, rubber overmolding and extruded polymer make the HorizonLine 4000 as functional as it is good looking. Top mounted range buttons, large function buttons with auto shutoff functions.