Sun Optics USA Hunter 2.5X20 Shotgun Scope 5In/Eye Relf 1" One Piece Tube Design. Precision Ground, Fully Multi-Coated Lenses With Wide Band Coating. Duplex Reticle. Fast Focus Ocular. Posi-Clik Brass Finger Dail Windage/Elevation. 6" Eye Relief. 100 yd. Parallax. Nitrogen Filled. 100% Waterproof, 100% Shockproof, 100% Fogproof. Exit Pupil 8MM, Reticle: Duplex, Obj Dia: 20MM, FOV: 16.4 Eye Relief 6", Click: 1/4 MOA Length: 7.4", Weight: 7.2oz. Limited Lifetime Warranty On Materials And Workmanship Backed By Sun Optics USA.