Eagle Eye Saxon Rifle Scope 10-40x50 Side Focus (30mm Tube Tube) Red/Blue/Green Illuminating Etched Glass Mil Dot Sniper Rifle Scope with Weaver Mounts &#x2714;Nitrogen filled against damp; One piece tube more strong and shockproof; Etched Glass mil dot reticle more shockproof than Crosshair; BKA4 lens more clearly. &#x2714;Weight:820g/28.9oz; Length:420mm/16.5inch; Eye Relief:90mm/3.5inch; Tube Diameter(mm/inch):30/1.18 &#x2714;Field of View(m@100m)/(ft@100yds):3.31/9.94@10x 0.8/2.5@40X &#x2714;Power:10X-40X; ObjectiveLens:50mm; Click Value:1/8; Parallax Adjustment:Side Focus 15 yds to Inf &#x2714;All accessories fix a good and long life time rifle scope, we quality guaranteed, or refund.