The Crossfire HD 3-9x40 Second Focal Plane riflescope has an HD Optical System that uses select glass elements to deliver sharp resolution, reduces chromatic aberration, and provides excellent color fidelity with edge-to-edge clarity. Fully multi-coated lenses feature anti-reflective coatings on all air-to-glass surfaces to enhance light transmission and improve clarity in low-light conditions. Specially calibrated for the slower velocities of modern muzzleloaders. This reticle ensures accurate holds over distance, giving you confidence in longer range scenarios.