SIG SAUER SIERRA4 BDX 4-16×44 30mm Rifle Scope

The SIG SAUER SIERRA4 BDX is a 4-16x44mm riflescope built for paired-rangefinder ballistic solutions. It uses BDX Ballistic Data Xchange technology to display an illuminated holdover dot that corresponds to your rangefinder data, ballistics profile, and environmental inputs. The scope features a digital focal plane reticle with 194 individually controlled LEDs and a 30mm main tube in a matte black finish.

Key Specifications

• The magnification range is 4-16x.
• The objective lens diameter is 44 mm.
• The main tube diameter is 30 mm.
• The reticle is a BDX-R2 digital ballistic reticle with 194 LED hold points.
• The reticle is presented on a digital focal plane (second focal plane).
• The weight is 22.7 oz.
• The finish is Black matte.
• Power is supplied by 2 × CR2032 batteries.
• The field of view at 100 yards is approximately 0.80–3.30 ft.
• Key connectivity and feature set: Ballistic Data Xchange (BDX) with SmartBDC ballistic groups and automatic holdover dot display.

The SIERRA4 BDX pairs advanced digital reticle technology with practical magnification and a robust 30mm tube to support precision-oriented shooting tasks. Its BDX connectivity and SmartBDC options make it well suited for shooters who use paired rangefinders and data-driven holdovers. The scope's combination of clear optics, digital reticle control, and a compact power solution provides a capable optic for precision and range-assisted applications.