| Magnification | 4-12 x |
| Objective Lens Diameter | 40 mm |
| Eye Relief | 3.1 inches |
| Field of View | 27.1-9.2 feet/100 yards |
| Tube Size | 1 inch |
| Turret Style | 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 |
| Length | 14.4 inches |
| Weight | 16.6 ounces |
VIPER 4-12X40 DIMENSIONS
| LENGTHS | |||||
| L1 | L2 | L3 | L4 | L5 | L6 |
| 14.4 | 2.4 | 2.7 | 6.5 | 4.3 | 3.4 |
| HEIGHTS | |
| H1 | H2 |
| 1.87 | 1.57 |
Dimensions measured in inches.
DEAD-HOLD BDC RETICLE
The customized design of this reticle helps eliminate guesswork on hold-over and windage corrections. Good for hunting and shooting at varying ranges where estimating hold-over is a concern.
OPTICAL FEATURES |
|
| 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. |
| Second Focal Plane Reticle | Scale of reticle maintains the same ideally-sized appearance. Listed reticle subtensions used for estimating range, holdover and wind drift correction are accurate at the highest magnification. |
CONSTRUCTION FEATURES |
|
| Tube Size | 1-inch diameter. |
| Single-Piece Tube | Maximizes alignment for improved accuracy and optimum visual performance, as well as ensures strength and waterproofness. |
| Aircraft-Grade Aluminum | Constructed from a solid block of aircraft-grade aluminum for strength and rigidity. |
| Waterproof | O-ring seals prevent moisture, dust and debris from penetrating the riflescope for reliable performance in all environments. |
| Fogproof | Argon gas purging prevents internal fogging over a wide range of temperatures. |
| Shockproof | Rugged construction withstands recoil and impact. |
| Hard Anodized Finish | Highly durable low-glare matte finish helps camouflage the shooter’s position. |
| ArmorTek | Ultra-hard, scratch-resistant coating protects exterior lenses from scratches, oil and dirt. |
| Capped Reset Turrets | Allow quick re-indexing of the turret (no tool needed) to zero after sighting in the riflescope. Caps provide external protection for turret. |
| Side Focus | Adjustment located on riflescope’s left side and is easily accessible from shooting position. Provides optimal image focus and parallax removal. |
INTERNAL MECHANISM DESIGN FEATURES |
|
| Precision-Force Spring System | Uses premium components in the erector-spring system to ensure maximum repeatability and ease of adjustment. |
| Precision-Glide Erector System | Uses premium components in the zoom lens mechanism to ensure smooth magnification changes under the harshest conditions. |
CONVENIENCE FEATURES |
|
| MAG-Bar | Allows rapid, easy changes in magnification. |
| Fast Focus Eyepiece | Allows quick and easy reticle focusing. |
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