Operation Manual

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This Viper PST riflescope uses a second focal plane reticle.

This style of reticle always maintains the identical visual

size regardless of magnification. The advantage to this

style of reticle is that it will not become too large and

“heavy” at high magnifications.

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . 3

Mounting . . . . . . . . . . . . . . . . . . . . . . 10

Maintenance . . . . . . . . . . . . . . . . . . . . 18

Troubleshooting . . . . . . . . . . . . . . . . . . 19

Vortex Service and Repair Policy . . . . . . . . . . 20

Specifically designed for the military, law enforcement and

committed precision shooting communities, the Viper PST

Series riflescopes offer the highest levels of performance

and reliability. With features such as matched turret/reticle

subtensions, CRS zero stop mechanisms and precision

ranging reticles, the Viper PSTs are ready for any situation.

PRECISION

SHOOTING

TACTICAL

SECOND FOCAL PLANE RIFLESCOPES

Owner’s Manual

1–4x24 Riflescopes

Summary of content (11 pages)

PAGE 1
PRECISION SHOOTING TACTICAL SECOND FOCAL PLANE RIFLESCOPES Owner’s Manual 1–4x24 Riflescopes Specifically designed for the military, law enforcement and committed precision shooting communities, the Viper PST Series riflescopes offer the highest levels of performance and reliability. With features such as matched turret/reticle subtensions, CRS zero stop mechanisms and precision ranging reticles, the Viper PSTs are ready for any situation. ® This Viper PST riflescope uses a second focal plane reticle.
PAGE 2
Riflescope Adjustments Reticle Focus The Vortex Viper PST Riflescope Illumination Knob Fast Focus Eyepiece Elevation Adjustment Knob MagView Reticle Focus Vortex Viper PST riflescopes use a fast focus eyepiece designed to quickly and easily adjust the focus on the riflescope’s reticle. To adjust the reticle focus: 1. Look through the riflescope at a blank white wall or up at the sky. Adjust the reticle focus 2. Turn the eyepiece focus knob in or out until the reticle image is as crisp as possible.
PAGE 3
Windage and Elevation Adjustments MOA Adjustments Vortex Viper PST riflescopes incorporate precision finger adjustable elevation and windage Elevation Knob dials with audible clicks. MOA unit of arc measurements are based on degrees and minutes. There are 360 degrees in a circle, 60 minutes in a degree for a total of 21,600 minutes in a circle. A minute of angle will subtend 1.05 inches at a distance of 100 yards. The Viper PST 1–4x24 riflescope with MOA adjustments use 1/2-minute clicks which subtend .
PAGE 4
About Parallax Customizable Rotational Stop (CRS) This Viper PST riflescope does not have a parallax focus. The focus is factory pre-set at a distance of 100 yards. Vortex Viper PST riflescope elevation turrets incorporate the unique CRS rotation stop feature. After the rifle is sighted in, the design of the CRS allows a shooter to quickly and easily return to an original zero point when using the elevation turret to dial-in temporary bullet drop corrections.
PAGE 5
Turret Rotation Illumination Adjustments Vortex Viper PST riflescopes incorporate Vortex’s patented Radius Bar to visually assist in Radius Bar keeping track of turret rotations. The radius bar provides a quick visual reference that allows the shooter to confirm: The Vortex Viper PST riflescopes use a variable intensity reticle illumination system to aid in low light performance. To activate the illumination, rotate the adjustment knob in either direction.
PAGE 6
Riflescope Mounting Rings and Bases To get the best performance from your Vortex Viper PST riflescope, proper mounting is essential. Although not difficult, the correct steps must be followed. If you are unsure of your abilities, it would be best to use the services of a qualified gunsmith. Mount an appropriate base and matching rings to your rifle according to the manufacturer’s instructions. The Vortex Viper PST riflescopes require 30mm rings.
PAGE 7
Eye Relief and Reticle Alignment Bore Sighting After installing the bottom ring halves on the mounting base, place the riflescope on the bottom ring halves and loosely install the upper ring halves. Before tightening the scope ring screws, adjust for maximum eye relief to avoid injury from recoil: 1. Set the riflescope to the middle of its magnification range. Initial bore sighting of the riflescope will save time and money at the range.
PAGE 8
Final Range Sight-In and CRS Stop Set Setting the CRS Stop and Indexing Elevation Knob After the riflescope has been bore-sighted, final sight-in and CRS stop set should be done at the range using the exact ammunition expected to be used while shooting. Sight in and zero the riflescope at the preferred distance. 100 yards is the most common zero distance, although a 200 yard zero may be preferred for long range applications.
PAGE 9
1. After filling the center gap on the post with shims, replace the elevation cap. 2. Align the turret cap so the “0” mark on the cap matches up with the “0” reference line on the turret post. Again, be sure not to rotate the actual turret mechanism in the process. 3. Re-tighten the retaining screws, but do not overtighten. Use of thumb and forefinger on the short end of the hex wrench will provide sufficient force.
PAGE 10
Maintenance Troubleshooting Cleaning Sighting-in Problems The fully waterproof and fogproof Vortex Viper PST riflescope requires very little routine maintenance other than periodically cleaning the exterior lenses. The exterior of the scope may be cleaned by wiping with a soft, dry cloth. Many times, problems thought to be with the scope are actually mount problems. Be sure the mounts are tight to the rifle and the scope is secured so it doesn’t twist or move in the rings.
PAGE 11
Vortex Service and Repair Policy Unconditional Lifetime Warranty Vortex Optics wants you to shoot and use your Viper PST riflescope under any conditions with complete confidence—that’s why our warranty is straightforward and simple: www.vortexoptics.com Unconditional Lifetime Warranty • Fully transferable • No warranty card needed • No receipt needed Rest assured, if this riflescope should ever require repair, all you need to do is contact Vortex for absolutely free service.