Sig Sauer Sierra3 BDX 52mm Scope | BDX-R1 | SOSBDX36111

The SIG Sauer Sierra3 BDX riflescope integrates a digital BDX-R1 ballistic reticle and the BDX Ballistic Data Xchange system to present a scaled holdover dot when paired with compatible BDX rangefinders and the SIG BDX App. Optically optimized with SpectraCoat lens treatments and featuring MOTAC motion-activated illumination, LevelPlex digital anti-cant, and the KinETHIC kinetic energy indicator, the scope combines digital ballistic functionality with a traditional riflescope form factor. The design supports precision shooting and hunting applications where ballistic compensation and reduced parallax error matter.

Product Specifications

• The optics type is RIFLE.
• The tube diameter is 30MM.
• The objective size is 52mm.
• The reticle is BDX-R1 digital ballistic reticle.
• The focal plane is Second focal plane.
• Illumination is listed as Yes with OLED holdover dot functionality.
• The lens coating type is SpectraCoat.
• The adjustment size is .25 MOA.
• The battery is CR-2032.
• The listed weight is 25.90 oz.
• The field of view is 4.70 – 14.10 ft @ 100 yds.
• The eye relief range is 3.43″ – 4.21″.
• Adjustable parallax (side parallax) is listed as Yes.
• Proofing is listed as Fog/Waterproof (IPX-7).
• The UPC is 798681587070.

The Sierra3BDX blends digital ballistic convenience with established optical performance. Its integrated BDX functionality and mobile-app ballistic setup simplify holdover on varying ranges, while SpectraCoat lenses and MOTAC illumination preserve usability in variable light. For shooters seeking a scope that pairs with rangefinders to reduce holdover calculations, this model provides a compact digital solution within a conventional scope platform.

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