CQB 3.5x40mm mil-do features:- prismatic optical system provides large field of view and extraordinary clarity.- push/pull lockable target turret knobs are resettable- audible and tactile 1/4 MOA elevation and windage adjustments.- 1 1/2 scope Centerline height above the rail is perfect for AR15 platform rifles- locking quick release mount- black anodized aluminum construction- fully multi coated optics provide an ultra sharp view.- Nitrogen Purged and O-ring sealed. Nitrogen Purged and O-ring sealed.- waterproof, shockproof, fog proof capable of withstanding the toughest conditions specifications:- magnification: 3.5x- reticle: Mil-Dot- illuminated reticle color: Blue and Green- objective lens: 40mm- eye relief: 2.2 - exit Pupil: 11.4- click value: 1/4 - lens coating: Green- body color: black anodized- length: 7.0 - weight: 18.4 oz.