This Leupold VX-1 Shotgun/Muzzleloader 1-4x20mm scope with Heavy Duplex reticle features multicoat 4, quantum optical system, generous eyebox, lockable fast-focus eyepiece, ballistic aiming system, 1/4 MOA, tactile power selector, proprietary nitrogen fill process, 6061-T6 aircraft quality aluminum, and shotgun/muzzleloader parallax.