Thermal scopes
Thermal clip-on attachment
Thermal imagers
Night Vision Riflescopes
Day-Night Systems
Night Vision Monoculars
Night Vision Goggles
Digital NV products
Telescopic Sights
Prism Sights
Red Dot Sights
Laser Boresights
Objective Lenses
BEAST-R 3.5-14.0x50mm
Thermal scopes
> BEAST-R 3.5-14.0x50mm

Optimized for medium- and long-range engagements

FLIR High Resolution Core 
Automatic/manual shutter image calibration
Precise internal lens focusing mechanism
Manual display brightness adjustment
Switchable image polarity: White Hot / Black Hot / Colored Hot
Switchable reticle: Mil-Dot or crosshair with 5 color options

Mean Point of Impact correction function

Digital zoom: 2X, 4X
Battery status indicator
Quick-Release Weaver Mount
Rated for use with heavy recoil weapons
Recording: Video Output /Optional Video Recorder with onboard replay


The Bering Optics BEAST-R Thermal Weapon Sight provides thermal target acquisition and engagement on light to heavy weapon platforms. Superb Germanium optics paired with an advanced Vanadium Oxide (VOx) uncooled thermal core and proprietary electronics are the heart of this powerful multi-spectral, all-environment system. The Bering Optics BEAST-R featuresa user-friendly menu with multiple options which can be intuitively accessed to customize settings to the shooter’s needs without disengaging from the target. The extremely rugged, light and compact BEAST-R is nitrogen-purged and is water-, dust- and shock-proof. BEAST-R Thermal Sight is action ready in virtually any environment or light conditions including conditions when the environmental obscurants such as smoke, dust, haze, fog, are present.

Product Modification


Product SKU#


Optical Magnification, x


Digital Zoom Magnification, x

4.0x, 8.0x

Objective lens system


Angular FOV at 4.0x (horizontal x vertical), degree

7.4° x 5.6°

Eye relief, mm


Focus range, yds / m

11 / 10 to infinity

Diopter Setting, dptr

-4 to +3

Reticle W/E adjustment value at a distance of 100m (110 yds)

1.34"/3.4cm increments

Core resolution, pxl


Pixel pitch, µm


Image refresh rate, Hz


Thermal Sensitivity (NETD), mK

< 50

Display type and resolution, pxl


Start-up time, typical., sec.


Object type and size, approx., ft² / m²

8 / 0.75

25.8 / 2.4

Detection, approx., yds / m

1100 / 1000

990 / 900

Recognition, approx., yds / m

330 / 300

330 / 300

Identification, approx., yds / m

190 / 170

440 / 400

Dimensions, in / mm

9.8"x2.8"x3.0" / 250x70x75

Weight,  approx., oz/g

23 / 654

Power supply standard

CR123 (two)

Estimated battery life, hour

Up to 4 with batteries  /  up to 6 with accumulators

Operating temperature, °F/°С

-40° to +122° / -40° to +50°

Water intrusion


Humidity, %

Up to 98%

In Box
  • BEAST-R Thermal Sight
  • Quick release Weaver Mount
  • Front lens flip-up protective cap
  • Tactical hard case
  • Two CR123 Batteries or Rechargeable LI accumulators
  • Lens Cleaning Cloth
  • Instruction manual
  • 1.5 feet video cable with 3.5mm RCA male connector plug
  • Rubber eye guard
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