Sig Sauer SIERRA6BDX 5-30x56 Riflescope, 34mm, Black, BDX-R2 Digital, Side Focus, 0.25 MOA Adjustments

The Sig Sauer SIERRA6BDX 5-30x56 riflescope brings Applied Ballistics technology directly to your rifle without requiring a smartphone or external device. This 34mm tube scope pairs its integrated BDX-R2 (Ballistic Data Xchange 2.0) system with Sig's advanced 6x optical platform, letting you dial automatic hold-over corrections on the fly once you've connected the scope to a BDX-equipped rangefinder. Whether you're hunting at sea level or in the mountains, or shooting long-range steel at the bench, the SIERRA6BDX adapts to your ballistics, ammunition, and environmental conditions—then puts those numbers where your reticle is.

The optic itself is built tough. It's waterproof to IPX-7 (full submersion to 1 meter), fog-proof with argon purging, and delivers up to 95% light transmission across the visible spectrum, so you get a bright, clear sight picture from dawn to dusk. The 5–30x magnification range and 56mm objective give you versatility across hunting and precision rifle disciplines. Fine 0.25 MOA adjustments and side-focus turret let you dial in true parallax-free performance at distance. The digital reticle sits on the focal plane and displays your automatic hold-over dot, updated in real time once the rangefinder does its job.

Sig also engineered a KinETHIC kinetic energy transfer indicator into the reticle, so you can confirm an ethical shot before you press the trigger—a feature that appeals to ethical hunters who want to know their round has the energy needed for a clean, responsible harvest. The Levelpllex system with auto-leveling mode keeps your vertical and horizontal axes true, reducing setup mistakes when you're in the field or at the range. This is a scope for shooters who want ballistics smarts, optical quality, and reliability in one package.

Key Features

• Integrated BDX-R2 automatic hold-over system paired with compatible Sig rangefinders
• Advanced 6x optical system with up to 95% light transmission for bright, sharp images
• KinETHIC kinetic energy transfer indicator for ethical shot verification
• 5–30x magnification with 56mm objective; 34mm tube for modern rifle platforms
• 0.25 MOA click adjustments for precise dial-in
• Side-focus parallax correction for accurate long-range shooting
• IPX-7 waterproof and argon-purged fog-proof construction
• Levelpllex with auto-leveling mode for repeatable accuracy
• Digital focal plane reticle with ballistic profiles for centerfire, muzzleloader, and crossbow

Specifications

Frequently Asked Questions

What rangefinder do I need to use the automatic hold-over feature?

The SIERRA6BDX's BDX-R2 system requires a Sig Sauer BDX-equipped rangefinder to transmit ballistic data and range information to the scope. Once paired, the rangefinder sends your firing solution to the scope's digital reticle, which displays the correct hold-over automatically.

Can I use this scope without a rangefinder?

Yes. The SIERRA6BDX is a fully functional riflescope with traditional manual adjustments and a digital reticle. Without a paired BDX rangefinder, you'll dial hold-over and wind correction manually, just as you would with any long-range hunting or precision rifle scope.

What does the KinETHIC indicator do?

The KinETHIC (kinetic energy transfer) indicator built into the reticle shows whether your shot will deliver sufficient energy to the target at your current distance and ballistic profile. This helps hunters verify an ethical shot before committing to the trigger.

Is the SIERRA6BDX suitable for hunting?

Yes. The 5–30x magnification, bright optics, waterproof construction, and ballistic intelligence make it well-suited to hunting medium to long-range game. It's also equally at home on a precision rifle range or in a long-range hunting competition.