Every Nikon Monarch riflescope begins with a one piece main body tube machined from high quality aircraft grade aluminum for the utmost in durability, shock resistance, and waterproof/fogproof integrity. Inside that tube is the heart of the Monarch line, the Ultra Clearcoat optical system of precisely ground and polished lenses, each coated with multiple layers of proprietary anti-reflective compounds. This system permits a Monarch to deliver 95% light transmission over a lifetime of hard use. Each Nikon Monarch long range scope incorporates a fast focus eyepiece and adjustable objective lens for immediate, crystal clear focus, no matter what the range. Nikon's newest long range scope delivers an impressive exit pupil across the power range for use in any light, plenty of power for long shots on game, and is one of the few scopes in its power range with an adjustable objective.