Steiner 5221 P4Xi 4-16x 56mm Obj 27.5-6.9 ft @ 100 yds FOV 34mm Tube Black Finish Illuminated SCR Steiner's Riflescopes offer a wide variety of reticles perfectly suited to your hunting, competitive, or tactical shooting adventures. From clean, simple designs for fast-actiontarget shooting, to detailed, precision reticles for longrange shooting. The precision adjustment system pinpoints accuracy which is easily achieved with Steiner windage and elevation adjustment systems. Each scope tube is milled from solid, high-grade aluminum stock for greater strength and durability along with a variety of lens coatings for add strength, protection, and clarity and are fully shockproof and can withstand up to 900 Gs of impact. The P4Xi riflescope is a compact, tactical optic that is ideal for patrol rifles and AR platforms. It features windage and elevation knobs which are designed for precise adjustment. The dials are calibrated so that 1 click equals 1 cm @ 100 meters or .1 mRAD for the 4-16x. The scope has rugged construction milled from solid, high-grade aluminum stock so there are no welds or seams, for greater strength and durability. This 4-16x56mm model has an illuminated SCR reticle which lets the shooter engage targets at long distance even in low light. It also has a 34mm tube.