This riflescope has main tube diameter 30mm and overall diameter of the objective bell is 32mm. SFP Rifle Scope, Ultra Short 218mm 8.6in, 4in Long Eye Relief, Turret Lock System, Fully Multi Coated • 30mm Monotube, 1/10MIL 1cm Adjust, 6 Levels Illumination, Flip-up Caps & Scope Rings • A Must for Your Compact Air Guns and Light Weight Firearms, The Shortest Marksman Scope for You Magnification: 2-8x Objective Lens Dia: 32mm Ocular Lens Dia: 33mm Ocular Lens Length: 33mm Exit Pupil: 16.0-4.0mm Optics Coating: Fully-multi coated Field of View: 52.4-13.1 feet@ 100 yds Field of View: 17.4-4.35 m@ 100m Field of View: 10-2.5° Eye Relief: 90-85mm (3.5-3.4") Length: 218mm (8.6in) Weight: 420g (14.8oz) Tube Dia: 30mm Monotube Click Value: 1/10MIL, 1cm, 0.1MRAD Elevation Range: 23.5MIL Windage Range: 23.5MIL Parallax Free Set: 100 Yards Reticle: Etched MPR-V5 Finish: Black matte Illumination: 6 levels Shock tested to 750g, water resistance IPX4 Fully nitrogen purged to eliminate any fogging of the lenses internally Turret lock system with zero re-set feature High quality 6061 T6 aircraft grade aluminum Diopter compensation from fast-focus eyepiece (+2 to -2) Accessories: one pair of 30mm weaver scope rings, flip-up caps & cleaning cloth
