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Questions & Answers
Optics planet list the Eye relief at 1.5 to 3.0 Sig list it as 3.35. Anyone know what it is at full mag? Expert Answer

At full magnification, the eye relief is 3.35". At its lowest magnification, the eye relief is 4.21".

by Ethan, Gear Expert, January 20, 2022
Does anyone know what size/brand flip up lens caps fit each end of this one?

Brand no, but size I got from Sig's site: Ocular OD 41mm, Objective OD 52.63mm

by PeterB, Verified Owner, March 15, 2021
Customer Reviews
Helpful Positive Review
Sig Saur , need I say more by Roy, February 17, 2019
Once again Sig has struck a winner. I am old school and skeptical all to often! After licking my finger and looking at the grass between myself and the target I was influenced by a friend to try the sig setup. Old geeks like me better wake up. I have...
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8/10 found this helpful
Helpful Positive Review
Sig scope -the best scope ever by Rlb, Verified Owner, November 12, 2018
I was looking for a scope that was user friendly, with great optics and at a reasonable price. This one fits the mold. Matched with a BDX rangefinder makes this combination a fomadible force in optic world of scopes and rangefinders. I would highl...
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2/4 found this helpful
Helpful Negative Review
well its a scope and it works by Jeremy, Verified Owner, November 16, 2024
I’ve used this scope for the past 12 months and will be changing it soon. Does it work? Yes when I can get it to connect via Bluetooth. The eye relief is terrible. It’s about 3/4” at full magnification. About on the level of $150 scope. The cro...
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1/1 found this helpful
Most Recent Reviews
Brand New Sig Scope by Gelato Guy, December 29, 2020
Received the scope brand new. very disappointed that the diopter adjustment ring in the eyepiece lense will not turn at all to adjust the sight. maybe the quality control missed this on this one? Given the price not sure I would buy another one as I ...
Read More...
4/5 found this helpful
Read All 4 Reviews
Reticle:
Digital Ballistic
Tube Diameter:
30 mm
Reticle Focal Plane:
Second Focal Plane (SFP)
Illumination Color:
Red
Finish:
Matte
Color:
Black
Weight:
2 lb
Adjustment Click Value:
0.25 MOA
Adjustment Type:
MOA
Parallax:
Adjustable
Illumination Type:
LED
Included Accessories:
Battery, Lens covers, Wrench, Manual, Cloth
Additional Features:
BDX
Condition:
New

Code: SD9-RS-S3BDX44-SOSBDX34111

MPN: SOSBDX34111

UPC: 798681587056

List: $849.99Save 35%
$548.99

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Product Info for SIG SAUER Sierra3BDX 4.5-14x44mm Rifle Scope 30mm Tube Second Focal Plane

The Sig Sauer SIERRA3BDX 4.5-14x44mm Tactical Rifle Scope features exceptional optical quality and light transmission with SpectraCoat anti-reflection, ultra-wide broadband lenses. These Rifle Scopes by SIG SAUER provide an illuminated automatic holdover dot on targets when paired via Bluetooth with a SIERRA3BDX rangefinder using ballistics and environmental conditions. The Sig Sauer SIERRA3BDX 4.5-14x44 Ballistic Rifle Scope features LevelPlex digital anti-cant and the innovative KinETHIC energy transfer indicator, as well as motion activated illumination that powers up when it senses motion. A successful hunt starts with accuracy, so pick up a Sig Sauer SIERRA3BDX 4.5-14x Illuminated Rifle Scope today!image

The world's most advanced rangefinders and Rifle Scopes are now even easier to use with the new BDX 2.0™. BDX 2.0 means you can now choose, App-free easy set-up or if you desire to take your shooting to the next level of accuracy, then download our BDX smartphone app and configure your rangefinder and or rifle scope for your exact ballistics and environmental characteristics. BDX 2.0 also allows users to quickly and easily bond their rangefinders and sights with preset ballistic groups pre-loaded onto all BDX products that cover that vast majority of calibers on the market. These preset ballistic groups allow you to use BDX enabled products without the use of a smartphone app, so they are READY, RIGHT OUT OF THE BOX

WARNING: California`s Proposition 65

Specifications for SIG SAUER Sierra3BDX 4.5-14x44mm Rifle Scope 30mm Tube Second Focal Plane:

Manufacturer: SIG SAUER
Objective Lens Diameter: 44 mm
Magnification: 4.5 - 14 x
Reticle: Digital Ballistic
Tube Diameter: 30 mm
Reticle Focal Plane: Second Focal Plane (SFP)
Exit Pupil: 3.1 - 9.7 mm
Illumination Color: Red
Finish: Matte
Field of View, Linear: 6.7 - 19.9 ft at 100 yds
Eye Relief: 1.5 - 3 in
Color: Black
Weight: 2 lb
Adjustment Click Value: 0.25 MOA
Length: 8 in
Adjustment Type: MOA
Parallax: Adjustable
Illumination Type: LED
Battery Type: CR2032
Width: 2 in
Adjustment Range: 0.25 MOA
Height: 6 in
Focus Range: 800 yds
Lens Material: Glass
Optical Coating: HD
Brightness Settings: 10
Battery Life: 20,000 hours
Weather Resistance: Yes
Water Resistance Level: IPX-7
Water Resistant Mark: 1 m
Fogproof: Yes
Battery Quantity: 2
Package Type: Box
Included Accessories: Battery, Lens covers, Wrench, Manual, Cloth
Magnification Type: Variable
Additional Features: BDX
Condition: New
Attachment Type: Riflescope Ring

Features of SIG SAUER Sierra3BDX 4.5-14x44mm Rifle Scope 30mm Tube Second Focal Plane:

  • Integrated BDX Ballistic Data Xchange. A rangefinder and Rifle Scope system that uses ballistics, enviromental conditions and Bluetooth to illuminate the exact holdover dot.
  • Automatic holdover dot on a Digital Focal Plane, combining Second Focal Plane stadias, with an OLED illuminated ballistic holdover dot that automatically scales with zoom to subtend on target at any magnification level.
  • Features our MOTAC (Motion Activated Illumination) that powers up when it senses motion and powers down when it does not. Provides for optimum operational safety and enhanced battery life.
  • Spectracoat highly efficient, ultra-wide broadband, anti-reflection lens coatings reduce surface reflections to extremely low levels xacross the entire visible spectrum providing superior light transmission.
  • SIG SAUER's innovative KinETHIC kinetic energy transfer indicator. KinETHIC provides assistance in assuring an ethical hunt by indicating when energy on target drops below a threshold that can be set by the hunter using the SIG BDX App.
  • New for BDX Rifle Scopes, Auto LevelPlex, automatically increases digital level sensitivity on longer shots.
  • Dependable waterproof (IPX-7 rated for complete immersion up to 1 meter) and fog-proof performance.

Package Contents:

  • SIG SAUER Sierra3BDX 4.5-14x44mm Rifle Scope 30mm Tube Second Focal Plane

SIG SAUER Sierra3BDX 4.5-14x44mm Rifle Scope 30mm Tube Second Focal Plane Orderable Models

List of Orderable Models

  • SIG SAUER Sierra3BDX 4.5-14x44mm Rifle Scope 30mm Tube, Second Focal Plane, Black, Digital Ballistic Reticle, MOA, SOSBDX34111 , MPN: SOSBDX34111 , UPC: 798681587056 , Code: SD9-RS-S3BDX44-SOSBDX34111

SIG SAUER Sierra3BDX 4.5-14x44mm Rifle Scope 30mm Tube Second Focal Plane Unavailable & Discontinued Models

List of Unorderable Models

  • Demo, SIG SAUER Sierra3BDX 4.5-14x44mm Rifle Scope, 30mm Tube, BDX-R1 Digital Ballistic Reticle, 0.25 MOA, Black, NSN N, SOSBDX34111 , MPN: SOSBDX34111-DEMO , Code: SD9-RS-S3BDX44-SOSBDX34111-DEMO
  • USED, SIG SAUER Sierra3BDX 4.5-14x44mm Rifle Scope 30mm Tube, Second Focal Plane, Black, Digital Ballistic Reticle, MOA, SOSBDX34111 , MPN: SOSBDX34111-EDEMO , Code: SD9-RS-S3BDX44-SOSBDX34111-EDEMO-OB-C
  • Open Box, Dealer Demo, SIG SAUER Sierra3BDX 4.5-14x44mm Rifle Scope, 30mm Tube, BDX-R1 Digital Ballistic Reticle, 0.25 MOA, Black, NSN N, SOSBDX34111 , MPN: SOSBDX34111-DMO , Code: SD9-RS-S3BDX44-SOSBDX34111-DMO
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