Built upon SIERRA3 award-winning technology, and the SIG SAUER BDX Ballistic Data Xchange technology, the SIERRA6 family of riflescopes provides the hunter or marksmen with an intelligent auto-holdover specific to their ballistics, target, and environment. Pairing a SIERRA6 to a BDX equipped rangefinder allows users to bring the capability of Applied Ballistics® into the field without the need for a mobile device. Downloads Sig Sauer Product Catalog 2020 Download