Bering Optics BEAST-R 336 Thermal Weapon Sight Rifle Scope 2-8x 50mm TAU II Core (BE43550)

Bering optics

$ 3,395.00 $ 4,900.00

Bering Optics BEAST-R 336 Thermal Weapon Sight Rifle Scope 2-8x 50mm TAU II Core (BE43550)



The Bering Optics BEAST-R Thermal Weapon Sight provides thermal target acquisition and engagement on all 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.


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



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

    Export Restrictions

    While all Gen 3 and some Gen 2+ require export licenses, all night vision products are subject to United States Export rules and regulations. Valid export licenses may be issued by the U.S. Department of Commerce or the U.S. Department of State, Directorate of Defense Trade Controls, in accordance with the International Traffic in Arms Regulation (ITAR), Title 22, Code of Federal Regulation 120-130. No exceptions!!