Vortex Diamondback 4-12 x 40 Dead-Hold BDC
- 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.
- Tube Size:
1 inch diameter tube offers a versatile blend of adjustment, size and weight for a wide variety of shooting applications.
- 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.
O-ring seals prevent moisture, dust and debris from penetrating for reliable performance in all environments.
Argon gas purging prevents internal fogging over a wide range of temperatures.
Rugged construction withstands recoil and impact.
- Hard Anodized Finish:
Highly durable hard-coat anodization provides a low-glare matte surface and helps camouflage the shooter’s position.
- 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.
INTERNAL MECHANISM DESIGN FEATURES:
- Precision-Glide Erector System:
This system ensures the components in the zoom lens mechanism glide smoothly and cleanly through all magnification ranges.
- Fast Focus Eyepiece:
Allows quick and easy reticle focusing.
- Dead-Hold BDC (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.