WIth the Sig Sauer SIERRA3BDX 6.5-20x52mm Riflescope, you can just put the dot on your target and pull the trigger! Although this scope looks like a traditional riflescope, it actually contains the power of the SIG SAUER BDX Ballistic Data Xchange. The Sig Sauer SIERRA3BDX rifle scope provides the shooter with an illuminated auto-holdover dot on targets when combined with a Sig Sauer BDX capable KILO rangefinder. Featuring exceptional SpectraCoat lenses, LevelPlex digital anti-cant, and KinETHIC kinetic energy transfer indicator, the SIERRA3BDX 6.5-20x52mm is incredibly easy to use. Just range your target, put the holdover dot on the target and pull the trigger. With Sig Sauer SIERRA3BDX 6.5-20x52mm Riflescope, you simply connect the dot!