Vector Optics Siegfried 3-12x50 First Focal Plane Scope FFP Brief Introduction: Most scopes have the reticle fitted in the second focal plane (near the eyepiece). While, presently it has always been the practice to fit the reticle in the first focal plane (the reticle increases its size when change the magnification from low to high). Each system has its advantages. The advantage with telemetric reticles (like rangefinder & Mil-dot etc) is that the target image and distance between dots remains constant even when changing magnification. It is the system that is widely used by the TOP military suppliers now. First Focal Plane Etched Glass Reticle, 34mm Monotube, Eteched New MP Reticle, w/ Tactical Low Profile Picatinny Mount Rings 1 Click for 1 cm Adjustment, Low Illumination System Support Night Vision. Specifications Magnification 3-12x Objective Lens Dia 50mm Ocular Lens Dia 34mm Ocular Length 70mm Exit Pupil 4.2-16.3mm Length 350mm (13.2 inch) Weight (net) 810g (28.6 ounce) Eye Relief 65-120mm (2.56-4.72''), Long Field of View (ft@100yds) 9.0-31.5 Field of View (M@ 100M) 3.0-10.5 Field of View (@100yds) 1.7-6.0° Num of Lens 13 Parallax ± 0.125 Reticle First Focal Plane Etched MP Gap distance between objective and turret: 52mm (2.0 inch) Gap distance between ocular and turret: 35mm (1.4 inch) Optics Coating: Fully-multi coated crystal sharp clear Side Focus Range: 50 Meters to unlimited (50, 100, 200, 300, 400, 500, 700, 900 and infinite) Elevation Range: 230cm (turret color change according to clock-wise or anti clock-wise adjustment) Windage Range: 120cm 11 levels gred brightness illumination 1st, 2nd and 3rd brightness is very weak that can support night vision 34mm Hammer-forged Monotube Shock proof (1000g), Water Proof (at 300mm and 54 degree) and Fog Proof (Nitrogen Purged) High quality aluminum alloy in durable black matte finish Feature 1 Click 1cm direct finger W&E turrets adjustments with audible clicks for greater precision Fast focus eyepiece at ocular lens adjustment (diopter from -3 to 2)