SIG SAUER KILO2400BDX 7x25 Rangefinder & 6.5-20x52 SIERRA3BDX Riflescope Combo Kit

SIG SAUER KILO2400BDX 7x25 Rangefinder & 6.5-20x52 SIERRA3BDX Riflescope Combo Kit
Key Features
  • KILO2400BDX 7x25 Laser Rangefinder
  • Sends Ballistic Data to Riflescope
  • 3400-Yard Max Measurement Range
  • Inclinometer with AMR Ranging System
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SIG SAUER assembled this KILO2400BDX 7x25 Rangefinder and 6.5-20x52 SIERRA3BDX Riflescope Combo Kit to give you the tools you need to get the most accurate and ethical shot every time—especially at extreme distances and in challenging light when solid identification is sometimes difficult. The rangefinder and riflescope communicate through a free iOS or Android app running on your smartphone to not only improve your first-shot accuracy, but to determine if your shot has enough energy for an ethical hunt.
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SIG SAUER assembled this KILO2400BDX 7x25 Rangefinder and 6.5-20x52 SIERRA3BDX Riflescope Combo Kit to give you the tools you need to get the most accurate and ethical shot every time—especially at extreme distances and in challenging light when solid identification is sometimes difficult. The rangefinder and riflescope communicate through a free iOS or Android app running on your smartphone to not only improve your first-shot accuracy, but to determine if your shot has enough energy for an ethical hunt.

SIG SAUER 7x25 KILO2400BDX Laser Rangefinder (OD Green, Class 3R)

With optics and electronics that quickly and accurately range the target and the ability to send holdover data straight to compatible riflescopes, the Sig Sauer 7x25 KILO2400BDX Laser Rangefinder gives you a critical edge when it matters most. Its moderate magnification monocular gives you a good look at the target, then with the simple push of a button measures the distance out to as far as 3400 yards. Paired with the Sig Sauer SIERRA3BDX scope via Bluetooth and the SIG BDX app for iOS or Android, the rangefinder sends elevation and windage info directly to the scope's reticle—simply put the digital ballistic holdover dot on target, and fire.

A dedicated processing engine provides a fast refresh rate for the laser, enabling four measurements per second so you'll have the most accurate range possible for moving targets or to confirm the range to a stationary subject. Complementing the rangefinder is an integrated inclinometer that measures the relative angle to the target. When the angle and range are combined, Sig's AMR ranging system adjusts the displayed range so you can compensate correctly for uphill or downhill shots, greatly improving your accuracy.

The advanced LCD display clearly shows the ranging information in an uncluttered layout with a small, precise targeting circle. Designed for durability, the housing is made of a lightweight and durable magnesium with a binocular-style eyecup and diopter adjustment. Measuring 4.4 x 3.0" and weighing just 7.5 ounces, including the CR2 battery, the KILO2400BDX will be a valuable addition to your kit.

Optical Performance

  • 7x magnification
  • 25mm objective
  • Compact roof prism
  • Proprietary SpectraCoat broadband, anti-reflection lens coatings reduce surface reflections across the entire visible spectrum
  • 357' field of view at 1000 yards
  • Long 15mm eye relief
  • Comfortable 3.6mm exit pupil


  • Class 3R laser
  • Effective range distance: reflective surfaces up to 3400 yards, trees up to 1800 yards, deer up to 1400 yards
  • Runs on one included CR2 battery
  • Integrated inclinometer measures relative angle to target and displays adjusted distance for more accurate aiming

Ranging Technologies

  • BDX (Ballistic Data Exchange) transmits windage and bullet-drop calculation for Sig Sauer SIERRA3BDX riflescope
  • SIG BDX app for iOS or Android
  • Embedded Applied Ballistics Ultralite with bullet database and support for G1/G7 bullets
  • Create up to 25 custom ballistic profiles
  • Lightwave DSP engine: an advanced power management system for fast refresh rates and reduced instances of false-positives when ranging to distant or weak targets
  • HyperScan mode refreshes range four times per second
  • RangeLock displays the last range result when ranging distant targets
  • Line of Sight (LOS) or Angle Modified Range (AMR) display/ranging options
  • Full ballistic holdover and windage results in MIL or MOA

Use and Handling

  • In-view high-transmittance OLED display for easy viewing in all light conditions, especially in low light
  • Uncluttered display with small center circle aiming point
  • Binocular-style eyecup
  • Dioptric correction

Construction Details

  • Lightweight, durable, and temperature-resistant polymer housing
  • Ergonomic design allows for easy one-hand operation
  • Slip-resistant protective StealthID graphite gray rubber armoring
  • Weight: 7.5 ounces, with battery
UPC: 798681588176

SIG SAUER 6.5-20x52 SIERRA3BDX Riflescope (BDX-R1 Reticle)

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.

Optical Performance

  • Powerful 6.5-20x zoom magnification is ideally suited for mid ranges on lower power with the ability to place accurate shots at extreme ranges
  • Massive 52mm objective provides the light gathering required to ensure views remain bright in challenging light or when viewing targets at long range on high magnification
  • Extra-low dispersion (ED) and high-transmittance (HT) glass provides enhanced light transmission to produce bright and clear high-contrast views with accurate color
  • Highly efficient, ultra-wide broadband, anti-reflection SpectraCoat lens coatings reduce surface reflections across the entire visible spectrum, improving light transmission
  • 14-foot field of view at 100 yards on 6.5x power, 3.5-foot on 20x

BDX-R1 Digital Ballistic Reticle Details

  • Second focal plane placement maintains a consistent reticle size regardless of the magnification selected
  • Digital aiming point placement remains accurate at all magnifications
  • 10 adjustable brightness settings ensure clear aiming point visibility in all light conditions
  • Non-illuminated duplex crosshair design leaves most of the field of view open, clear, and uncluttered
  • BDX information is automatically transferred to the riflescope and clear aiming points are placed on the hairs to indicate an adjusted elevation holdover and windage adjustment
  • Place the dot on the target and fire for precise first-shot accuracy
  • Ability to configure multiple holdover points that are all displayed to eliminate turret adjustments or other distance calculations
  • Use without rangefinder to configure ballistic information and set a reticle profile with multiple holdover distances out to 800 yards
  • Blue LED on the magnification ring blinks each time the reticle is updated


Ballistic Data Xchange System
  • Designed to provide hunters with the ability to take the most accurate and ethical shot
  • Requires compatible rangefinder
  • Riflescope connects to a smartphone running the Sig BDX app for Android or iOS
  • Receives and makes automatic adjustments to the reticle aiming point placement to improve shot accuracy
  • Through app, user can input round, load, muzzle velocity, and other ballistic information that is used to calculate aiming point placement
  • User can choose to input environmental conditions, including temperature, wind speed and direction, and humidity that are used to adjust aiming point and improve accuracy
  • Wireless Bluetooth connectivity with secure PIN accessibility to eliminate the possibility of interference with other Sig BDX apps and rangefinders being used by other hunters in the field or at the range
KinETHIC System
  • Calculates the maximum effective hunting range
  • Indicates when the round's energy may not be sufficient to ensure an ethical kill
  • Helps to ensure an ethical hunt by indicating when a given round's energy drops below a threshold
  • Threshold is set by the user in the BDX app
  • Based on the ballistic profile provided and distance of the shot
Auto LevelPlex System
  • Can be activated in the field during a hunt
  • Ensures the user is holding the rifle level to improve shot accuracy
  • When activated, the system automatically increases digital level sensitivity for longer shots
LevelPlex Digital Anti-Cant System
  • Utilizes an internal digital level that is more accurate than conventional bubble levels
  • In-view indicators enable the user to precisely optically align the scope to their rifle and remove unwanted cant from the system
  • ±0.5° of accuracy ensures the horizontal and vertical axes of the reticle are perfectly parallel to the rifle
MOTAC Motion-Sensor System
  • Immediately powers up reticle illumination when it senses motion
  • Powers reticle down when it does not detect movement for 2 minutes to extend battery life


Use and Handling

  • Capped low-profile turrets reduce snag and ensure dirt, dust, and water won't foul the adjustment mechanism
  • Precise 1/4 MOA per click impact point correction
  • Wide 40 MOA windage and elevation adjustment range with 20 MOA of travel per turret rotation
  • Fast-focus eyepiece
  • Objective lens filter thread allows the use of front filters, like polarizing or neutral density, to enhance the view
  • Long 4.2" eye relief on low power and 3.4" on high provides a generous eye box to ease eyestrain and improve comfort
  • Comfortable exit pupil at low to medium magnifications enables easy use in low or challenging light

Construction Details

  • Large 30mm maintube maximizes light throughput to keep views bright and provides the room required for the windage and elevation adjustment range
  • Lightweight and durable aluminum housing
  • Reflection-limiting matte black anodized finish
  • Nitrogen filled and O-ring sealed to an IPX7 rating, making it waterproof and submersible to 3.3' (1m) for up to 30 minutes and resistant to internal fogging when moving through extreme changes in environmental conditions and temperature
  • 26-ounce weight
  • Runs on two included CR2032 batteries
UPC: 798681587070

SIG SAUER 7x25 KILO2400BDX Laser Rangefinder (OD Green, Class 3R) Specs

Metering RangeReflective: 3200 yd / 3109 m
Tree: 1800 yd / 1646 m
Deer: 1400 yd / 1280 m
Prism TypeRoof
Objective Lens Diameter25 mm
Field of View357' @ 1000 yd / 118.5 m @ 1000 m
Exit Pupil Diameter3.6 mm
Eye Relief15 mm
Form FactorMonocular
Power Source1 x CR2
Dimensions4.4 x 3 x 1.4" / 11.2 x 7.6 x 3.6 cm
Weight7.5 oz / 215.0 g
Packaging Info
Package Weight0.9 lb
Box Dimensions (LxWxH)6 x 4 x 2.75"

SIG SAUER 6.5-20x52 SIERRA3BDX Riflescope (BDX-R1 Reticle) Specs

Magnification6.5 to 20x
Objective Lens Diameter52 mm
Field of View6.5x: 14.1' @ 100 yd / 4.7 m @ 100 m
20x: 4.7' @ 100 yd / 1.6 m @ 100 m
Exit Pupil Diameter6.5x: 6.1 mm
20x: 2.6 mm
Eye Relief4.2 to 3.4" / 10.7 to 8.6 cm
Diopter Correction-2.0 to +2.0
Reticle TypeBDX-R1 Digital Ballistic Reticle (Second Focal Plane)
IlluminationPartially Illuminated
Illumination TypeLED
Brightness SettingsAdjustable Brightness (10 Levels)
Impact Point Correction1/4 MOA per Click
Windage Adjustment40 MOA
Elevation Adjustment40 MOA
Water ResistanceWaterproof, IPX7
FogproofYes, Nitrogen Filled
Maintube Diameter30 mm
Battery2 x CR2032
Weight25.9 oz / 734 g
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