Sig Sauer | Sierra4 BDX 4-16×44 30mm

The Sig Sauer Sierra4 BDX is a digital ballistic riflescope designed to pair with BDX-enabled rangefinders and deliver an illuminated holdover dot matched to your target distance, ballistic profile, and local conditions. It uses a digital focal plane reticle with 194 LEDs to provide precise, on-target indications across its magnification range. Connectivity and an illuminated BDX-R2 reticle make it a practical choice for precision target work and field hunting applications where fast, repeatable holdovers matter.

Product Specifications

• The manufacturer is Sig Sauer.
• The model is Sierra4 BDX.
• The magnification range is 4-16x.
• The objective lens diameter is 44 mm.
• The main tube diameter is 30 mm.
• The reticle is the BDX-R2 Digital Ballistic reticle with LED hold points.
• The optic uses a digital focal plane.
• The reticle is illuminated and driven by onboard LEDs.
• The eye relief is listed as 3.24″-2.44″ in source material.
• The weight is 22.7 oz.
• The finish is Black Matte.
• The field of view is reported as 0.80 – 3.30 ft @ 100 yds.
• The scope uses (2) CR2032 batteries for the digital/illuminated functions.
• The total elevation travel is listed as >70 MOA.
• The UPC is 798681700639.

Built around a 30mm main tube and a high-contrast optical path, the Sierra4 BDX is intended for shooters who want integrated ballistic calculation and an illuminated digital aiming reference. Its BDX connectivity and LED-driven reticle simplify range-to-hold workflows for precision shooters and hunters who value repeatable, data-driven holdovers. The scope combines digital features with conventional magnification for a versatile field package.