Sig Sauer Sierra 6 BDX Rifle Scope, 2-12X40mm, 30mm, 0.25 MOA, Black

Sig Sauer BDX is the newest in electro-optics technology. or Ballistic Data Xchange technology is found in the new Sierra3BDX and Sierra6BDX riflescopes and KiloBDX rangefinders. To get the most out of your BDX products you can also download the SIG SAUER BDX app on Android and Apple devices and receive information via Bluetooth. The BDX allows for both accuracy and simplicity.