Sig Sauer Electro-Optics SOTM11000 Tango-MSR LPVO Black 1-10X28mm 34mm Tube Illuminated Red MSR BDC10 Reticle Features Throw Lever & Alpha-MSR Mount Sig Sauer Electro-Optics Tango-MSR LPVO Is a High Performance 10X Optical System With Low Dispersion Glass. Featuring An Integrated Thread In Throw Leaver For Quick Magnification changes, illuminated MSR BDC10 Reticle With 11 Brightness Levels And Is Waterproof, Shockproof And Fog Proof. Includes Lay Flat Flip Back Lens Covers And An Alpha-MSR 1 Piece Aluminum Cantilever Mount. Magnification: 1-10X Objective: 28mm Field Of View: 10 - 110 ft @ 100 yds Eye Relief: 82 - 90mm Tube Diameter: 34mm Length: 10.50" Weight: 20.40 Oz Reticle: Illuminated Red MSR BDC10 Proofs: Fog/Shock/Waterproof