The 1 tube Optika5 2-10x42 is available in 2 configurations, for high powered rifles and for rimfire rifles. Both models feature MeoBright lens coatings for optimal light transmission and MeoDrop hydrophobic water repellant coating, and are fully shock-proof, water proof, and nitrogen purged. The standard 2-10x42s are set parallax free at 100 yards, while the Rimfire (PA) version has adjustable parallax from 10yds to infinity for close range shooting. Second focal plane reticle options