The 3-12x56 Meostar R1 has a 30mm maintube diameter, with its reticle placed in the rear focal plane (in front of the eyepiece) to maintain its virtual size throughout the entire magnification range. Targeting smaller game at longer distances is quite easy with the reticle location in the rear focall plane. The 3-12x56 Meostar R1 is an extremely large and powerful optic for use in any ambient light conditions. It offers the magnification options useful for the open spaces of North American hunters, combined with an enormous oversized 56mm diameter objective lens to gather the light needed to produce stellar illumination upon the subject even at the maximum 12x power. The Meostars unique internal mechanism is designed for the highest mechanical resistance for consistent accuracy shot after shot.< /br>This scope is refurbished with lifetime warranty. Key Features The Meostar Finish Advantage The supreme 3-12x56 Meostar R1 riflescope has an aircraft aluminum alloy construction and a bead blasted exterior, as well as an Elox andonizing process, which ensure an extremely durable and non-reflective black matte outer finish. Meostars Magnificent Multicoatings Meopta has dramatically improved their light transmission per glass surface with a proprietary IMB-5501 anti reflective coatings & ION assisted applications process. Light transmission is staggeringly high at 99.8% per surface! 30mm internal diameter tube 3 Dioptric correction Supreme lowlight performance, well into dusk, thanks to 56mm diameter objective lens Soft rubber eyecup prevents injury from recoil power Specifications:- Meopta Meostar R1 3-12x56 Zplex Riflescope 706570 Refurbished