The RT-S Mod 7 1-5x24IR with it's Riton Quick Acquisition (QA) Illuminated Reticle in the Second Focal PLane (SFP), provides quick target acquisition in variable light levels and environmental conditions. In addition, the optic features the advanced Mod 7 line features, including the High Density glass with Extra Dispersion. Capped Elevation and Windage Turrets with Zero Reset Aircraft Grade Aluminum with Rugged Design Ready for the Toughest Environments 100% Waterproof, Fog proof and Shockproof (tested up to 1200 G's) 1/2 MOA Capped Windage and Elevation Adjustment Fast-Focus Eyepiece Assembled in EP-Level Clean Room Dry Nitrogen Purged and Sealed Utilizing Nitrogen gas, the optic is purged and sealed to ensure optimal performance in all weather conditions for the life of the optic. Precision Quality Assurance Every Riton product goes through a rigorous quality control process by a certified technician in Tucson, AZ. Each product you receive has undergone. Riton HD Glass The Riton High Density (HD) glass delivers 99.5% light transmission for enhanced clarity and optimal sight picture. Riton Performance Coating Incorporating proprietary fully multi-coated lenses, all Riton optics feature low light enhancement, full wide band, anti-scratch and anti-reflective Riton Rugged Construction The Riton Rugged Construction incorporates the application of 6061-T6 aircraft-grade aluminum, CNC machined one piece tubes, and Type III Hard Coat Anodize Specifications Magnification: 1-5 Parallax Setting: Fixed at 100 yards Tube Diameter: 30mm Objective Lens Diameter: 24mm Focal Lens Position: Second Focal Plane Lens Coating: Fully Multi-Coated, Full Wide Band, Waterproof Coated, Low Light Enhancement Reticle: Riton Quick Acquisition (QA) Illuminated Reticle Field of View at 100 yds: 114.2ft @ 1x - 22.6ft @ 5x Material: 6061-T6 Aircraft Grade Aluminum Weight: 21oz/595g Length: 10.5in/266mm Eye Relief: 3.9in/100mm Exit Pupil: 20mm @ 1x - 4.8mm @ 5x Click Value at 100 yds/mm: 1/2in/12.7mm Adjustment Range: 180 MOA Mounting Length: 6.8in/172mm