Riton optics 52296 rt-s mod 7 4-20x 50mm obj 28.80-5.70 ft @ 100 yds fov 30mm tube black matte finish riton hunting mod 1 (sfp) Adj Size: .25 MOA Magnification: 4-20x Objective: 50mm Field Of View: 28.80-5.70 ft @ 100 yds Eye Relief: 3.90" Tube Diameter: 30mm Length: 14.50" Weight: 31 oz Reticle: Black Matte Parallax Adjustment: Riton Hunting Mod 1 (SFP) Parallax Adjustment: 10 yds-Infinity Proofs: 12.5-2.5mm Coating Type: Waterproof, Fogproof, Shockproof Optic Coating: Fully Multi-Coated