The KonusPro M-30 is truly the ultimate riflescope with more features than any other scope in the market. It starts with a 30mm, one-piece tube construction for the ultimate in strength and durability, to an unbreakable glass engraved, red & blue dual illuminated reticle. The M-30 was engineered to handle any weapon of choice (even the .50 caliber). In addition to being shockproof for the higher calibres, this nitrogen filled scope is also waterproof and fogproof for use in nearly all weather conditions. The 44mm objective lens with fully multi-coated optics allows for medium ring mounting & increased light transmission vs. a 40mm lens. The resettable turrets with 1/10 mil adjustments perfectly coincide with the mil-dot reticle for accurate shooting at any range. When you add in the level-bubble for the utmost in precision at long range and the side focus wheel that completely removes parallax from an incredible 10 yards to infinity, you realize this is no ordinary riflescope.