SIG SAUER SIERRA4 BDX 4-16×44 30mm BDX-R2 Riflescope

The SIG SAUER SIERRA4 BDX is a digital ballistic riflescope designed to simplify holdover at distance by integrating with BDX-enabled rangefinders. It uses a digital focal plane reticle, offering 194 individually controlled LED hold points and the BDX-R2 ballistic reticle to present an illuminated holdover dot matched to your ballistics and environmental data. The scope is built on a 30mm main tube with a 44mm objective and provides a practical magnification range for precision and mid-range applications.

Key Specifications

• The magnification range is 4–16x.
• The objective lens measures 44 mm.
• The main tube diameter is 30 mm.
• The reticle is a BDX-R2 digital ballistic reticle with illuminated hold points.
• The reticle illumination includes 194 individually controlled LEDs.
• The focal plane is digital / second focal plane.
• The overall length is 12.0 inches.
• The weight is 22.7 oz.
• The eye relief ranges approximately 3.24–2.44 inches.
• Connectivity is provided by BDX Ballistic Data Exchange with Bluetooth (connectivity up to 30 yards).

Designed for informed shooters who prioritize reliable, data-driven aiming solutions, the SIERRA4 BDX combines digital reticle technology, a clear optical system, and rugged construction in a compact package. Its BDX integration and extensive LED hold points make range-based holdovers straightforward, while the 30mm tube and 4–16x magnification deliver a versatile platform for precision shooting and field use.