Pick up a Mark 5HD? and you?ll feel the difference: it?s up to 20 ounces lighter than other scopes in its class. Get behind one and you?ll see the difference, from the superior edge-to-edge clarity and extreme low-light performance, to the versatility of the Combat Competition Hunter reticle. With three revolutions of elevation adjustment, the Mark 5HD was built to max out the performance of the latest long-range rifles and ammo. Ergonomically designed with more tactile, audible click adjustments, larger numbers, and a high-speed throw lever so you can put accurate fire downrange faster.Front Focal Illuminated TMR Reticle Expands on existing Mil Dot reticle design Utilizes hash marks instead of dots for increased ranging and hold-over precision Provides aiming points for both wind and bullet drop compensation 1 MIL is approximately 3.6 inches at 100 yards Hash marks are spaced .5 MILs apart, transitioning to .2 MIL spacing on the outer edges Red illuminated center section for great contrast in low-light conditions Non-caliber specific Intended to be used on highest magnification in a rear or 2nd focal plane scope Mil based systems are the current military standard Scope Features 1/10th MIL Click Adjustment 100% Waterproof and Fogproof 2nd Generation Argon/Krypton Waterproofing 35mm Maintube 5:1 Zoom Ratio 6061-T6 Aircraft Quality Aluminum Dial Illumination Control Dual Use Flip Open Lens Covers Front Focal Plane (FFP) Generous Eyebox M5C3 ZeroLock Adjustments Side Focus Twilight Max HD Light Management System Throw Lever