SIG SAUER SIERRA3BDX 3.5-10×42 | BDX-R1 | SOSBDX33111

The SIG SAUER SIERRA3BDX is a 3.5-10x42mm riflescope that integrates SIG SAUER’s BDX Ballistic Data Xchange to provide an illuminated, automatically scaled holdover dot when paired with a BDX-capable rangefinder. It combines SpectraCoat multi-band lens coatings, LevelPlex digital anti-cant, MOTAC motion-activated illumination and a KinETHIC kinetic energy indicator. The scope’s feature set is designed for use in field hunting and precision shooting applications where ballistic integration and fast target acquisition are valuable.

Product Specifications

• The manufacturer is Sig Sauer Electro-Optics.
• The model is SIERRA3BDX.
• The manufacturer part number is SOSBDX33111.
• The magnification range is 3.5-10x.
• The objective lens diameter is 42mm.
• The tube diameter is 30mm.
• The reticle is BDX-R1 Digital Ballistic.
• The focal plane is Second focal plane.
• The finish is Black matte.
• The weight is 20.90 oz.
• Adjustable parallax is listed as Yes.
• Illumination is listed as Yes and the scope uses a CR-2032 battery for the digital illumination functions.
• The field of view at 100 yards is 9.40 – 27.80 ft @ 100 yds.
• The adjustment size (click value) is 0.25 MOA.
• UPC is 798681587049.

The SIERRA3BDX pairs digital ballistic computation with a conventional riflescope form factor, delivering a modern optic that streamlines holdover and anti-cant information while retaining traditional magnification controls. SpectraCoat optics and MOTAC extend usable light transmission and battery life, and the integrated BDX system is intended to simplify ballistic compensation for field and precision use. For shooters who value ballistic integration and dependable optical performance, this scope combines digital features with a familiar control layout for practical on-rifle use.

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