Mark 4 4.5-14x50mm ER/T w/ Holland's M1 Knobs FFP This is a first focal plane scope, allowing you to use the reticle on any magnification setting. This scope features a 30mm main tube and 50mm OBJ bell for excellent light transmission. Mark-4 dials have been greatly improved, with bigger, bolder numbers. This scope is the choice of military/law enforcement shooters around the world.   Advanced Reticle Technology lets you shoot ANY BULLET at ANY MUZZLE VELOCITY, under ANY ENVIRONMENTAL CONDITION with ANY ZERO you choose! No other reticle design allows you such versatility and precision in long range shooting. No gimmics, no tricks, just shoot to the MOA or Mil correction required. It's that EASY! Advanced Reticle Technology eliminates dialing for 99% of all your big game hunting needs. You may also use the elevation and windage knobs to ADD to the reticle's aiming references. Since they are in minutes of angle, they speak the SAME language. Nothing is faster or more accurate than ART, GUARANTEED! Welcome to what is simply the easiest and most accurate range compensation reticle in the world today.