Optics Force

Sig Sauer SIERRA4BDX 4-16x44mm, 30mm Main Tube, Second Focal Plane, BDX 2.0 Ballistic Data Xchange Riflescope

Sig Sauer SIERRA4BDX 4-16x44mm, 30mm Main Tube, Second Focal Plane, BDX 2.0 - Main image
Sig Sauer SIERRA4BDX 4-16x44mm, 30mm Main Tube, Second Focal Plane, BDX 2.0 - View 2Sig Sauer SIERRA4BDX 4-16x44mm, 30mm Main Tube, Second Focal Plane, BDX 2.0 - View 3Sig Sauer SIERRA4BDX 4-16x44mm, 30mm Main Tube, Second Focal Plane, BDX 2.0 - View 4Sig Sauer SIERRA4BDX 4-16x44mm, 30mm Main Tube, Second Focal Plane, BDX 2.0 - View 5
$475.99 $699.99 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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Express Shipping · United States: $3.99

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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 (5.0 / 5 · 5 reviews)

Emily ★★★★★

The BDX link-up with my rangefinder is almost spooky—it puts that illuminated dot right where I need it in the reticle. Once zeroed, it held perfectly through a windy afternoon of dialing out to 400 yards.

James ★★★★★

The turret clicks are crisp and audible, making adjustments in the field feel precise and confident. Paired with my rangefinder, the holdover dot appeared exactly where I aimed at 300 yards. That little sync feature turned a tricky shot into an easy one.

Natalie ★★★★★

The illuminated holdover dot syncs with my rangefinder so fast I can get on target in seconds, and the glass clarity at 16x is surprisingly sharp for this price point.

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