The SIG Sauer SIERRA4 Riflescope combines advanced technology with rugged performance, making it a powerful tool for precision shooters. Featuring SIG’s cutting-edge BDX (Ballistic Data Xchange) technology, the SIERRA4 can seamlessly communicate with compatible rangefinders and the SIG BDX app to deliver real-time ballistic solutions. Its BDX-R2 digital reticle automatically illuminates the correct holdover point based on real-time data, eliminating guesswork for long-range shots. Designed for durability and clarity, the scope boasts an IPX7 waterproof rating, fully multi-coated lenses, and a crisp, bright sight picture across all magnification ranges. With 0.25 MOA click adjustments, Smart BDC capability, and a rugged build, the SIERRA4 offers shooters a dependable, intelligent optic for demanding field conditions. Sig Sauer Sierra4-BDX 4-16x44mm 30mm SFP BDX-R2 Digital Ballistic Reticle 0.25 MOA Black Rifle Scope SOSBDX44111