- 1 x SIG SAUER SIERRA4BDX Riflescope
- 2 x CR2032 Battery
- 1 x Quick Start Guide
Trusted & Verified
SIG SAUER SIERRA4BDX 6-24x50mm Waterproof Riflescope with BDX-R2 Reticle and Multi-Coated Optics
- 6 to 24x Magnification
- 50 mm Objective Lens
- 30 mm Maintube
- BDX-R2 Digital Ballistic Reticle
- 194 Individually Controlled LEDs
- Digital Focal Plane
- Second Focal Plane underlying Stadia
- BDX 2.0 Connectivity
- SmartBDC with 9 Onboard Ballistic Groups
- SIG SAUER BDX app compatibility
- Up to 25 Custom Profiles through the app
- Bluetooth connectivity up to 30 yards
- MOTAC Illumination Control
- LevelPlex Digital anti-cant System
- Greater than 48-MOA elevation travel
- Greater than 48-MOA windage travel
- 2 x CR2032 Batteries
- IPX7 Water-resistance
- 13.9-inch Overall Length
- 24.4 oz Weight
The SIG SAUER SIERRA4BDX 6 to 24x50 mm riflescope combines higher magnification with a 50 mm objective, 30 mm maintube, and the BDX-R2 digital reticle. Its digital focal plane uses 194 individually controlled LEDs to display illuminated hold points while retaining second focal plane stadia, giving users a conventional optical reticle with digitally generated aiming information.
BDX 2.0 Field Data System
BDX 2.0 connects the riflescope with compatible KILO BDX rangefinders through Bluetooth. Range, and environmental data can be communicated to the scope so the corresponding hold point is illuminated within the reticle. SIG SAUER specifies Bluetooth connectivity up to 30 yards, supporting configurations where the rangefinder and scope are operated separately.
SmartBDC and Digital Focal Plane
SmartBDC provides 9 onboard groups, while the SIG SAUER BDX app supports additional configuration and custom profiles. Digital Focal Plane technology automatically scales the illuminated hold point as magnification changes, helping keep the digital solution aligned throughout the 6 to 24x range.
Optical and Environmental Construction
The 50 mm objective and SpectraCoat anti reflection lens coatings support light transmission across the visible spectrum, with SIG SAUER specifying up to 95 percent light transmission. LevelPlex provides digital anti cant indication, MOTAC manages illumination according to movement, and the housing is IPX7 rated for immersion up to 1 meter.
| Magnification | 6-24x |
| Objective Lens Diameter | 50 mm |
| Overall Length | 13.9 inches |
| Weight | 24.4 oz. |
| Maintube Diameter | 30 mm |
| Total Elevation Travel | More than 48-MOA |
| Total Windage Travel | More than 48-MOA |
| Travel Per Rotation | 25 MOA |
| Eye Relief Low | 3.24 inches |
| Eye Relief High | 2.44 inches |
| Field of View Low (FT at 100 Yards) | 0.8- 3.33 |
| Field of View High (FT at 100 Yards) | 1.25-5 |
| Diopter Adjustment Range | +/- 2 |
| Color | Black |
| Mount Included | No |
| Battery | 2 x CR2032 |
| Focal Plane | Digital |
| Reticle | BDX-R2 Digital Ballistic Reticle w/194 LEDS |
| Illumination | Yes |
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Will I receive a full refund when I return an item?
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How many days do I have to make a return?
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My item was damaged in transit. How do I place a return?
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If I ordered a kit, do I have to return all the items?
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I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?
I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?
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What is your return policy?
What is your return policy?
Most items can be returned within 30 days for a full refund. Click here to read our full return policy.
