The VORTEX Viper 4-12x40 PA Riflescope, Dead-Hold BDC Reticle, Matte Black (VPR-M-04BDC) is ideal for big game, long range, predator/varmint, and target applications. This model scope features a side parallax, which uses an adjustment mechanism on the left side of the riflescope to fine-tune focus for the purpose of reducing parallax shooting error.
The Viper riflescope offers exclusive XR anti-reflective coatings for exceptional image clarity, and XD premium high-density glass to provide the edge-to-edge sharpness needed to differentiate details at any distance.
XR coatings deliver incredible image detail with extremely high resolution and light transmission. Fully multi-coated, scratch-resistant coatings eliminate annoying, image-degrading reflections and offer extraordinary brightness for a lifetime of trouble-free lens protection.
XD (Extra-low Dispersion) glass objective lens elements made of extra-low dispersion glass enhance image resolution and are carefully selected and precision crafted to exacting standards for true-to-life images of startling clarity and color accuracy.
The Precision-Force Spring System uses an ultra-performance copper alloy/cobalt-beryllium spring - greatly increasing the fatigue life of the erector support system over more commonly used materials. The spring maintains a constant force throughout the entire range of motion - virtually eliminating change in spring pressure over time. And, most importantly, windage and elevation adjustments are consistently smooth thanks to the spring's resistance to galling against the erector tube.
The Viper's Precision-Glide Erector System features premium-grade fluoropolymer teflon resin bushings that provide exceptional resistance to stress cracking, temperature change, corrosion, and friction-induced wear. In addition, these bushings have an ultra-low coefficient of friction for the smoothest possible operation of the magnification adjustment.
Vortex engineered the Viper riflescope to stand the test of time and rough abuse. The solid one-piece main tube of the Viper is incredibly tough and constructed out of 6061 T6 aircraft-grade aluminum. Vortex goes even further and purges the Viper with the highly-prized argon gas, targeting corrosion in an unchallenged way:
Argon gas does not absorb or react chemically with water.
Argon gas eliminates internal fogging.
Argon gas maintains its protective properties over a wider temperature range.
Argon gas does not diffuse as quickly as other elements, extending the service life of the optics longer.
The customized design of the Dead-Hold BDC reticle helps eliminate guesswork on hold-over and windage corrections. It is good for hunting and shooting at varying ranges where estimating hold-over is a concern.
The Viper 4-12x40 PA Riflescope comes with removable lens covers, dust cloth and the VIP Unconditional Lifetime Warranty.
Objective Lens Diameter, mm
Field of View (FOV) @ 100yds, ft
Exit Pupil, mm
Eye Relief, mm
Tube Diameter, in
Click Value, in @ 100yds
0.25" (1/4 MOA)
Windage Adjustment Range, in @ 100yds
57" (57 MOA)
Elevation Adjustment Range, in @ 100yds
57" (57 MOA)
Parallax Setting, yds
50 to infinity
Side knob parallax adjust allows quick and easy parallax adjustments with range numbers visible while in the shooting position
XR Lens Coatings increase light transmission with multiple coatings on all air-to-glass surfaces
XD Lens Elements provide the edge-to-edge sharpness needed to differentiate details at any distance
Fully Multi-Coated Lenses increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces
1 inch one-piece tube maximizes strength and waterproofness
Precision-Force Spring System uses premium components in the erector-spring system, ensuring maximum repeatability and ease of adjustment
Precision-Glide Erector System uses premium components in the zoom lens mechanism, ensuring smooth magnification changes under the harshest conditions
MAG-View Bar permits quick and easy adjustment of magnification range - even under the coldest conditions
Fast Focus Eyepiece allows quick and easy reticle focusing
Low Profile Turrets are less susceptible to accidental impact damage
Quick Reset Turrets allow quick re-indexing of the turret housing to zero after sighting in the riflescope - re-index with fingers alone (no tool needed)
Due to the nature of this item, it may be restricted from shipment to the territories listed under Shipping Restrictions. It may require a permit or may be prohibited from ownership in these areas. Contact your local law enforcement/government officials to find out more. If you add it to the shopping cart and check out with it, it may be removed from your order by our customer service team (your credit card will not be charged for the item).