These riflescopes feature large diameters and a 30/30 engraved reticle that make them the most professional units in the whole "KonusPro" range. Supremely rugged and perfectly recoil-proof their engraved/laser-etched reticle will be able to withstand extreme forces and will not break or shift even if the riflescope is used with heavy calibers. Their optics are fully multi-coated and are made of high definition glass that will deliver the greatest light transmission from dawn to dusk while being nitrogen purged and sealed for utmost waterproof integrity. Finger Adjustable Windage plus Elevation Adjustments Heavy Caliber Recoil Proof Reticle Engraved (Glass-etched) Reticle Rayshades Click Value mm at 100m/in at 100yds: 1/4 M.O.A (725mm/.25") Adjusting Range m at 100m/in at 100 yds: 1.74m/685" Mounting Length: 5.5"/140mm