Sig Sauer SIERRA6BDX 2-12x40 30mm Riflescope, BDX-R2 Digital, 0.25 MOA Adjustment, Black

The Sig Sauer SIERRA6BDX 2-12x40 30mm riflescope brings Applied Ballistics ballistic calculation technology directly to your scope without requiring a smartphone or tablet in the field. Built on the proven SIERRA3 optical foundation and paired with Sig's BDX Ballistic Data Xchange 2.0 system, this scope delivers automatic hold-over solutions tailored to your specific rifle, ammunition, and environmental conditions—ideal for hunters and long-range shooters who demand speed and accuracy in the moment of truth.

The 2-12x magnification range covers everything from closer woodland shots to extended open-country hunting, while the 40mm objective and 30mm tube deliver exceptional light transmission (up to 95%) and optical clarity across the magnification range. The advanced HDX 6x optical system and integrated digital focal plane keep your ballistic reticle sharp and precise at any power setting. When paired with a compatible BDX rangefinder, the scope automatically calculates the exact hold-over dot needed for your target—accounting for range, ballistics, elevation, wind, and other variables in real time.

Durability is built in: IPX-7 waterproofing handles complete submersion up to one meter, argon purging ensures the internals stay clear over a lifetime of field use, and the 0.25 MOA click adjustments allow precise manual refinement when needed. The innovative KinETHIC kinetic energy transfer indicator helps you make ethical hunting decisions by showing whether your chosen hold will deliver sufficient energy to humanely take your game. The Levelplexâ„¢ leveling system with auto-levelplex mode keeps your shot aligned even on uneven terrain.

Whether you're glassing a ridge at dawn, executing a long-range precision shot, or hunting with a centerfire rifle, muzzleloader, or crossbow, the SIERRA6BDX pairs ballistic intelligence with rugged field reliability—no rangefinder app, no phone battery anxiety, just scope and shooter working as one.

Key Features

• Integrated BDX Ballistic Data Xchange 2.0 calculates automatic hold-over based on ballistics, range, and environment
• Advanced HDX 6x optical system with up to 95% light transmission for bright, clear images
• 2-12x magnification and 40mm objective suited for hunting and medium-to-long-range precision
• Digital reticle on focal plane maintains sharp alignment across all magnification levels
• Compatible with centerfire rifles, muzzleloaders, and crossbows
• KinETHIC kinetic energy transfer indicator supports ethical hunting decisions
• IPX-7 waterproof and fog-proof; argon purged for lifetime durability
• Levelplexâ„¢ leveling system with auto-levelplex mode for uneven terrain shooting
• 0.25 MOA click adjustments for precise manual refinement

Specifications

Frequently Asked Questions

What rangefinder do I need to use with the SIERRA6BDX?

The scope works with BDX-equipped Sig Sauer rangefinders. When paired together, they communicate wirelessly to calculate your automatic hold-over without requiring your phone or any external device.

Can I use this scope on a muzzleloader or crossbow?

Yes. The SIERRA6BDX's BDX 2.0 system supports ballistic profiles for centerfire rifles, muzzleloaders, and crossbows, so you can dial in hold-over solutions for all three platforms.

How waterproof is this scope?

The scope is rated IPX-7, meaning it's waterproof and fog-proof and can be completely submerged in water up to one meter deep. Argon purging inside the tube protects the optics over decades of use.

What's the magnification range good for?

The 2-12x range works well for general hunting across varied terrain—2x is useful for closer woodland shots and quick target acquisition, while 12x extends your reach for open-country or precision longer-range hunting.