The SIG Sauer SIERRA6BDX 3-18x44mm Rifle Scope is a second focal plane scope with the BDX-R2 digital ballistic reticle, adjustable parallax, 0.25 MOA clicks and a 30 mm tube, powered by two CR2032 cells.
BDX is the digital part: paired over Bluetooth with a SIG BDX rangefinder, the reticle illuminates a holdover dot at the correct elevation for the ranged distance and your load. The 3-18x range and adjustable parallax make this the mid-size model, suited to stalking and target work at longer distances than the 2-12x40.
How It Compares
Want less magnification and less weight? The SIERRA6BDX 2-12x40 is 21.4 oz with fixed parallax. Want more reach? The SIERRA6BDX 5-30x56 uses a 34 mm tube. Want the same BDX system with an AR mount included? The BRAVO6T-BDX 3-18x44 ships with an ALPHA5 mount. Browse all deer stalking scopes and long-range rifle scopes.
Ideal For
- Deer stalking at extended ranges
- Night fox and vermin control
- Target and gallery rifle shooting
- Shooters already using a SIG BDX rangefinder
Key Features
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Reticle: BDX-R2 digital ballistic, second focal plane
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Turrets: 0.25 MOA per click; 60 MOA elevation and 60 MOA windage
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Parallax: adjustable
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Tube: 30 mm
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Electronics: two CR2032 cells
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Housing: IPX7, argon-purged
Technical Specifications
| Magnification |
3-18x (variable) |
| Objective |
44 mm |
| Tube |
30 mm |
| Reticle |
BDX-R2 digital ballistic (second focal plane) |
| Click Value |
0.25 MOA per click |
| Adjustment Range |
60 MOA elevation / 60 MOA windage |
| Parallax |
Adjustable |
| Battery |
2 × CR2032 |
| Length / Weight |
12.25 in (311 mm) / 23.8 oz (675 g) |
| Waterproof |
IPX7, argon-purged |
| Warranty |
SIG Infinite Guarantee |
| SKU / MPN / UPC |
SOSBDX63111 / SOSBDX63111 / 798681628001 |
What's Included
- SIG Sauer SIERRA6BDX 3-18x44mm rifle scope
- CR2032 batteries, lens covers and documentation
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and SIG's Infinite Guarantee.
Frequently Asked Questions
What is the BDX-R2 reticle on the SIG Sauer SIERRA6BDX 3-18x44?
The BDX-R2 is a digital ballistic reticle: paired with a SIG BDX rangefinder over Bluetooth, the SIG Sauer SIERRA6BDX 3-18x44 illuminates a holdover dot at the correct elevation for the ranged distance.
Does the SIG Sauer SIERRA6BDX 3-18x44 have adjustable parallax?
Yes — the SIG Sauer SIERRA6BDX 3-18x44 has adjustable parallax.
Is the SIG Sauer SIERRA6BDX 3-18x44 first or second focal plane?
The SIG Sauer SIERRA6BDX 3-18x44 has its BDX-R2 reticle in the second focal plane.
What tube diameter does the SIG Sauer SIERRA6BDX 3-18x44 have?
The SIG Sauer SIERRA6BDX 3-18x44 has a 30 mm tube, so it needs 30 mm rings or a 30 mm mount.
How much does the SIG Sauer SIERRA6BDX 3-18x44 weigh?
The SIG Sauer SIERRA6BDX 3-18x44 weighs 23.8 oz (675 g) and is 12.25 in (311 mm) long.
