Brand: Sig Sauer

Sig Sauer 6.5-20×52 SIERRA3BDX Riflescope, BDX-R1 Reticle

Product Code 798681587070 Categories , Brand:


1 in stock

1 in stock

Available for in-store pickup or to ship directly to your FFL

Don't let its ubiquitous form factor fool you, because hidden inside the Sig Sauer 6.5-20x52 SIERRA3BDX Riflescope are technological innovations that use Bluetooth connectivity to compatible devices that will give you the cool confidence to make a precise shot and ensure an ethical kill—even at long range and in challenging light. Anchored on a free app for iOS and Android smartphones, Sig's Ballistic Data Xchange (BDX) system allows you to bond your mobile device with the scope and one of their KILO laser rangefinders and then pool a slew of information to plot a firing solution that is updated and displayed on the BDX-R1 digital ballistic reticle. The rangefinder gives you range and angle to the target while the app allows you to input the ballistic profile of your round as well as critical environmental data such as temperature and wind direction and speed. All the information is used to calculate an accurate elevation holdover and/or windage adjustment, which is sent to the riflescope. A dot is projected onto the reticle's crosshairs and all you need to do is place it on the target and fire. The scope can also be used without a rangefinder, utilizing the ballistic profile and environmental data to plot multiple aiming points at various distances. Since the dot is projected onto the reticle, the app adjusts the subtensions to the selected magnifications so they remain accurate through the entire zoom range. Optically, the SIERRA benefits from an exceptional zoom range and a massive objective lens that enables you to precisely send shots at long range while enjoying bright and clear views even in low light or if you have the scope set on max magnification. Extra-low dispersion glass and broadband anti-reflection coatings maximize light transmission with virtually zero distortion across the whole field of view with enhanced color fidelity, contrast, and resolution. Capped low-profile turrets adjust at a precise 1/4 MOA per click with 20 MOA of travel per rotation and an adjustment range of 40 MOA. To withstand the repeated recoil of regular use and to provide the adjustment room required for the windage and elevation turrets, the one-piece maintube is made of lightweight but strong aluminum and is robust at 30mm in diameter. The housing is nitrogen filled and O-ring sealed to an IPX7 rating to make it waterproof, submersible, and resistant to internal fogging. BDX-R1 Digital Ballistic Reticle Ballistic Data Xchange (BDX) System Illuminated Aiming Points Set by BDX Bluetooth Connectivity to Smartphones 1/4 MOA/Click Impact Point Correction 40 MOA Windage and Elevation Adjustment ED Glass with Broad Spectrum Coatings Nitrogen Filled & IPX7-Rated MOTAC Motion Sensor & LevelPlex System Runs on Two CR2032 Batteries



Black Anodized

Adjustment Size

.25 MOA



Brightness Settings

10 Daylight

Diopter Adjustment

+ / -2

Elevation Adjustment

40 MOA

Exit Pupil Diameter

6.10 – 2.60mm

Eye Relief

3.43" – 4.21"

Field Of View

14.10 – 4.70 ft @ 100 yds

Firearm Type


Focal Plane







Sierra3 BDX 2



Optic Coating


Parallax Adjustment

100 yds


Fog / Waterproof


Illuminated BDX-R1

Search Code


Similar Items


Tube Diameter



25.90 oz

Windage Adjustment

40 MOA

Windage Elevation


At The Modern Sportsman we offer flat rate shipping to Continental United States.

Apparel: $10
Handguns: $10
Rifles/Shotguns: $10
Ammunition: $15

We will NOT ship to your state if we are aware that the item being shipped is not legal.

Firearms shipping to the following states CT, VT, WA, CO, will be shipped with NO MAGAZINES
(DE- will not ship any mags over a 17 round capacity)

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Terms & Conditions


It is illegal to ship firearms to anyone not holding an active Federal Firearms License (FFL). For that reason, firearms purchased online may be picked up at our store or shipped to an FFL (gun store) near you. We may contact and verify the FFL you select during checkout before we ship your firearm(s). The buyer is encouraged to contact the receiving FFL licensee before purchase.


If there is an issue your purchase, please contact us within 15 business days of purchase. Depending on the reason for the request of a return, a restocking fee may be charged.

All Ammunition and Firearm sales are final.

For online orders the firearm is ready to be picked up at your FFL, Please INSPECT THE FIREARM THOROUGHLY to make sure it is what you ordered and that there are no defects with the firearm. If there are any problems, DO NOT ACCEPT THE TRANSFER!! We will gladly have the firearm picked up and returned to us from your dealer at our expense and provide you with your choice of a REPLACEMENT or REFUND. Once you accept transfer from your dealer, the gun is considered used and must be returned directly to the manufacturer for warranty repair or replacement. No returns to The Modern Sportsman after a transfer has been accepted.
Sales on the following items are final:

  1. Special orders.
  2. Products sold “as is” or “used” or that have an optic thats been installed or used after receipt.
  3. NFA items.
  4. Illumination devices, electronic sights and optics.


Used firearms may not be returned. All sales are final. Description and photos (if available) are provided by the seller.


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All new firearms are shipped in the original manufacturer’s box, with magazine(s), accessories and applicable warranty. Firearms requiring warranty work must be returned to the factory within 1 year of purchase for repair. Accessories and special order items not normally sold by our store will not be covered under warranty even if these products are part of an integrated firearms package, unless we have guaranteed the entire package in writing. Please contact the original manufacturer for warranty information on all accessories and special order items.


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All orders are shipped promptly from either our in-store inventory within 3-4 business days or distributor warehouse within 14 business days using UPS, FedEx, or USPS. Tracking numbers are available for items shipped via UPS and FedEx. Shipping prices are for the continental US. Shipping to Alaska, Hawaii, or other US Territories are possible but may incur additional charges. Please email us to inquire what those fees will be if this is an issue.


If item states “Available In Store”, this does not guarantee availability. If an item is no longer available after purchase, we will offer the immediate refund or offer a similar item.

There are many accessories and firearm parts that are in store but not listed on our website.

Please call or email with any questions regarding availabilty of an item


Online inventory changes every day. Occasionally an item may appear on the site by mistake or the item’s description may contain a typographical error. We do not guarantee that titles, descriptions, pictures, or prices on our site are error-free. We reserve the right to refuse any order including but not limited to orders for items with errors in the description or price. In the event that we cancel an order we will not charge the customer’s credit card or we will refund the money.


You must be 18 or older to purchase rifle or shotgun ammunition and 21 or older to purchase handgun ammunition. All ammunition will be shipped ground with adult signature required. Always make sure to use the correct ammunition for your specific firearms. Check your local laws for any other regulations.

Questions / Contact Us

Please contact us with any questions or concerns We respond to inquiries same-day during business hours For fast service please reach out to our Guest Support Team: (952) 300-8610 The Modern Sportsman | 3541 County Rd 42 W Burnsville, Mn 55306 | (952) 300-8610