Viper 4-12x40 PA
Dead-Hold BDC Reticle | 1 Inch Tube
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Viper 4-12x40 PA Riflescope
Effortlessly shrugging off recoil, moisture and darkness! The Viper's status as a premium riflescope won't be as easy to shake. Discover a riflescope with incredible performance features like premium, fully multi-coated optics with 95 percent light transmission, heavy duty Precision Force spring systems and the glass smooth Precision Glide erector system—delivering all this and more at a price that should have pulled a few more hundreds from your wallet than it did.
- 4-12x40 riflescope is ideal for big game, long range, predator/varmint, and target applications.
- Dead-Hold BDC reticle has a customized design that helps eliminate guesswork on hold-over and windage corrections. Good for any hunting or shooting at varying ranges where estimating hold-over would be a concern.
- Side knob parallax adjust allows quick and easy parallax adjustments with range numbers visible while in the shooting position.
- Removable lens covers
- Dust cloth
|XD Lens Elements||Extra-low dispersion (XD) glass increases resolution and color fidelity, resulting in crisp, sharp images.|
|XR Lens Coatings||Vortex proprietary XR fully multi-coated lens coatings increase light transmission for maximum brightness.|
|One-Inch Tube||Standard tube diameter for most American riflescopes.|
|One-Piece Tube||Maximizes strength and waterproofness.|
|Aircraft-Grade Aluminum||Premium grade of aluminum, valued for fatigue resistance.|
|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.|
|Waterproof||Optics are sealed with o-rings to prevent moisture, dust, and debris from getting inside the binocular.|
|Fogproof||Barrels are filled with argon gas to inhibit internal fogging.|
|Shockproof||Lenses are locked in place, fore and aft, with machined locking rings to remain in perfect alignment and withstand recoil and impact.|
|Hard Anodized Finish||Hard-coat anodization is durable; the low-glare matte helps camouflage the shooter’s position.|
|ArmorTek||Ultra-hard, scratch-resistant coating protects exterior lenses from scratches, oil and dirt.|
|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 Capped Turret||Is 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).|
|Side Parallax||Uses an adjustment mechanism on the left side of the riflescope to fine-tune focus for the purpose of reducing parallax shooting error.|
|Objective Lens Diameter||40 mm|
|Eye Relief||3.10 inches-3.40 inches|
|Field of View||27.1-9.2 feet/100 yards|
|Tube Size||1 inch|
|Turret Style||Low Capped|
|Adjustment Graduation||1/4 MOA|
|Travel per Rotation||12 MOA|
|Max Elevation Adjustment||57 MOA|
|Max Windage Adjustment||57 MOA|
|Parallax Setting||50 yards to Infinity|
|Product Manual (PDF)||Download|
|Product Manual 2 (PDF)||Download|
Viper 4-12x40 Dimensions
Dimensions measured in inches.
Dead-Hold BDC Reticle (MOA)
Customized dot design helps eliminate guesswork on holdover and windage corrections. Good for hunting/shooting at varying ranges where estimating holdover is a concern.
Viper 1-Inch Rings
Mounts 1.03 inches (26.16 mm) from base to center. Sold two per package.
Viper 1-Inch Rings
Mounts 0.88 inches (22.35 mm) from base to center. Sold two per package.
Viper 1-Inch Rings
Mounts 0.78 inches (19.81 mm) from base to center. Sold two per package.