The SIG Sauer SIERRA6BDX 3-18x44 Rifle Scope is a premium hunting and precision rifle scope built around SIG's BDX Ballistic Data Xchange technology. Paired with a compatible SIG BDX rangefinder, the BDX-R2 digital reticle lights an intelligent holdover dot based on range, ballistics and environment — taking the guesswork out of field shots.
It uses SIG's HDX 6x optical system (up to 95% light transmission), 30mm tube, 0.25 MOA turrets, adjustable parallax, argon purging, and LevelPlex digital anti-cant plus the KinETHIC energy indicator.
How It Compares
For a 1x-to-magnified do-it-all optic, see SIG's LPVO line in SIG Sauer rifle scopes. Browse all rifle scopes, the wider SIG Sauer range, and pair it with 30mm scope mounts.
Ideal For
- Long-range hunting and precision rifles
- Shooters using a compatible SIG BDX rangefinder
- Field use wanting intelligent holdover support
Key Features
- 3-18x44, 30mm tube, SFP
- BDX-R2 digital ballistic reticle with BDX 2.0
- Auto illuminated holdover dot (with BDX rangefinder)
- HDX 6x optics, up to 95% light transmission
- 0.25 MOA turrets, 60 MOA travel, adjustable parallax
- LevelPlex anti-cant, KinETHIC indicator; argon-purged, IPX7
Technical Specifications
| Magnification |
3-18x |
| Objective |
44 mm |
| Tube |
30 mm |
| Reticle |
BDX-R2 digital ballistic (SFP) |
| Click Value |
0.25 MOA |
| Adjustment Range |
60 MOA elevation / 60 MOA windage |
| Parallax |
Adjustable |
| Battery |
2× CR2032 |
| Length / Weight |
12.25 in / 23.8 oz |
| Waterproof |
IPX7, argon-purged |
| Warranty |
SIG Infinite Guarantee |
| SKU / MPN / UPC |
SOSBDX63111 / SOSBDX63111 / 798681628001 |
What's Included
- SIG SIERRA6BDX 3-18x44 rifle scope
- 2× CR2032 batteries
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 BDX?
SIG's Ballistic Data Xchange — paired with a compatible SIG BDX rangefinder, the scope automatically displays an illuminated holdover dot for the ranged distance.
Does it work without a rangefinder?
Yes — it functions as a standard illuminated scope, but the auto-holdover feature needs a compatible BDX rangefinder.
What mount does it need?
A 30mm mount or rings — see our rifle scope mounts.
