Description

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The Subtension Scale

MRAD Adjustments

An MRAD will subtend 3.6 inches at a distance of 100 yards. Viper PST riflescopes with MRAD adjustments use .1 MRAD clicks which subtend .36 inches at 100 yards / 1 cm at 100 meters, .72 inches at 200 yards /2 cm at 200 meters, 1.08 inches at 300 yards / 3 cm at 300 meters, etc.


Windage and Elevation Adjustments

The Vortex Viper PST Gen II 5 25 x 50 FFP riflescope incorporates precision finger adjustable elevation and windage dials with audible clicks.

 To make adjustments

1. Turn the adjustment knob in the appropriate direction: Up and Down or Left and Right as indicated by the arrows.

2. Following the directional arrows, turn the knobs in the direction you wish the bullet’s point of impact to go to.

EXAMPLE

MRAD Adjustments

With each click of the Viper PST moving the point-of-impact .1 MRAD, four clicks will move the bullet’s point of impact 1.44 inches at a 100 yard sight in distance. At 100 meters, four clicks will move the point of impact four centimeters.


RZR Zero Stop

Vortex Viper PST riflescopes incorporate the RZR Zero Stop feature. After the rifle is sighted in, the RZR Zero Stop allows fast, sure return to the original zero point when large multi-revolution elevation corrections have been dialed into the riflescope.

Without a zero stop, the shooter must pay very careful attention when dialing large corrections needing multiple revolutions of the elevation knob. If the shooter loses track of the number of revolutions, the original zero point may become lost. Because of the RZR Zero Stop, the elevation knob on the Vortex Viper PST Gen II 5 25 x 50 FFP can be quickly spun back to the original zero without having to carefully count revolutions.

Once the RZR Zero Stop is set, the elevation knob will stop turning at the original zero point when being returned from a temporary elevation correction.


First Focal Plane Reticle

First focal plane (FFP) reticles are located near the windage and elevation turrets in front of the image-erecting and magnifying lenses. This style of reticle will visually grow and shrink as you change the magni cation. The main advantage of an FFP reticle is that the reticle subtensions used for ranging, holdovers, and wind drift corrections are consistent at all magnifications. The reticle is heavier at higher magnifications and finer at lower magnifications.

XD Lens Elements

Extra-low dispersion (XD) glass increases resolution and color fidelity, resulting in crisp, sharp images.

XR Fully Multi Coated

Proprietary coatings increase light transmission with multiple anti reflective coatings on all air to glass surfaces.

Illuminated Reticle

Gives precise aiming under low light conditions.

ArmorTek

Ultra hard, scratch resistant coating protects outer lenses from scratches, oil and dirt.


Specifications

Weight9.6 oz
Magnification5 to 25 x
Objective Lens Diameter50 mm
Eye Relief3.4 in
Field of View24.1-4.8 feet/100 yards
Tube Size30 mm
Turret StyleTactical RZR Zero Stop
Adjustment Graduation.1 MRAD
Travel per Rotation10 MRAD
Max Elevation Adjustment20 MRAD
Max Windage Adjustment10 MRAD
Parallax Setting25 yards to Infinity
Length16 inches

Additional information

Weight2 lbs

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