Optics Force

Sig Sauer SIERRA4-BDX 6-24x50mm, 30mm Main Tube, Second Focal Plane, BDX 2.0 Ballistic Data Xchange Riflescope

Sig Sauer SIERRA4-BDX 6-24x50mm, 30mm Main Tube, Second Focal Plane, BDX 2.0 - Main image
Sig Sauer SIERRA4-BDX 6-24x50mm, 30mm Main Tube, Second Focal Plane, BDX 2.0 - View 2Sig Sauer SIERRA4-BDX 6-24x50mm, 30mm Main Tube, Second Focal Plane, BDX 2.0 - View 3Sig Sauer SIERRA4-BDX 6-24x50mm, 30mm Main Tube, Second Focal Plane, BDX 2.0 - View 4Sig Sauer SIERRA4-BDX 6-24x50mm, 30mm Main Tube, Second Focal Plane, BDX 2.0 - View 5
$535.99 $799.99 In stock

Category: Rifle Scopes

Details
The all-new SIERRA4-BDX™ riflescope simplifies shooting at distance by connecting to BDX-equipped rangefinders to deliver an illuminated holdover dot specific to your target distance, ballistic performance, and environmental conditions. With a digital focal plane and 194 LED hold points, the SIERRA4-BDX brings unmatched accuracy, connectivity, and clarity to the field.

  • BDX™ Ballistic Data Xchange Technology: Pairs with KILOBDX™ rangefinders to calculate and display an exact holdover dot using real-time ballistic and environmental data.
  • BDX-R2 Digital Reticle: 194 individually controlled LEDs on a digital focal plane for hyper-precise aiming.
  • SmartBDC™ Technology: Choose from 9 onboard ballistic groups or customize your setup for total control.
  • Advanced Bluetooth® Antennae: Improved connectivity up to 30 yards — perfect for shooter-spotter pairs when terrain dictates your position.
  • Rugged Performance: Waterproof (IPX7), 30mm main tube, and ultra-clear optical system with up to 95% light transmission.
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Thomas F. ★★★★★

The illuminated holdover dot syncs with my rangefinder faster than I expected, and the glass stays crystal clear even at 6x in low dusk light. The 30mm tube felt solid mounting it, and after a full afternoon dialing adjustments, it held zero without any drift.

Thomas C. ★★★★★

The windage and elevation adjustments click positively and track perfectly for me out to 600 yards. I paired this with a matching rangefinder and the auto-lock feature was spot-on right out of the box.

Victoria Z. ★★★★★

The illuminated holdover dot locked onto my target distance perfectly once paired with the rangefinder, and the 6-24x magnification is crisp even at the top end. Zeroing was straightforward, and the turrets have a solid, tactile click. This is the first time I’ve actually felt confident stretching o

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