The Leupold Mark4 LR/T 3.5-10x40 30mm Long Range/Tactical Rifle Scope is the one of the finest scopes available. . It features a Mil Dot Reticle with a Matte Finish. Butler Creek Flip-Open™ Lens Covers are standard issue with Mark 4 LR/T riflescopes. Product Specifications: Actual Magnification: 3.2(3.5x) 9.5(10x) Length (in): 13.5 Eyepiece Length (in): 3.2 Objective Length (in): 4.3 Objective Diameter (in): 1.8 Eyepiece Diameter (in): 1.6 Tube Diameter: 30mm Weight: 19.5 oz. / 553 grams Eye Relief (in): 4.7(3.5x) 3.4(10x) Eye Relief (mm): 119(3.5x) 93(10x) Obj. Lens Diameter: 1.6in / 40mm Max. Adjustment @ 100 yds (in): 65 Max. Adjustment @ 100 m (cm): 181 FOV @ 100 yds (ft): 29.9(3.5x) 11.0(10x) FOV @ 100 m (m): 10.0(3.5x) 3.7(10x) Ring Spacing: Max. Mount Ring Spacing (in): 6.2 Front Ring Space (in): 2.4 Rear Ring Space (in): 2.4