The Athlon Argos BTR Gen 3 tactical rifle scope delivers exceptional long-range precision with 10-40x magnification and a large 56mm objective lens for superior light gathering and target clarity.Athlon Argos BTR Gen 3 Tactical Rifle Scope10-40x variable magnification with 56mm objective lens30mm main tube diameter for enhanced durabilityABLR4 MOA reticle in second focal plane (SFP)Side parallax adjustment for precision shootingBlack matte finish reduces glare and reflectionField of view: 12.6-3.2 feet at 100 yardsWeight: 31.8 ounces Length: 16.3 inchesIncludes lens caps for protectionDesigned for tactical applications and long-range shooting this scope provides the magnification range and optical clarity needed for precision marksmanship hunting and competitive shooting at extended distances.