Bering Optics Rubicon Reflex Sight User Manual
Bering Optics Optical devices

RUBICON Reflex Sight
BE50004
T
he RUBICON reflex sight belongs to the class of
the most compact red-dot sights, which designed to 
be used with both eyes open in order to maintain 
peripheral vision and depth perception. The model is 
parallax free at a distance of 50 yards. 
The distinctive feature of RUBICON is a conveniently 
located “ON/OFF” button. Also, the button manually 
adjusts the brightness of the reticle accordingly to the 
ambient light conditions. Strong mounting screw 
make RUBICON able to withstand a heavy recoil, 
which make sight perfectly usable for the shotguns 
as well as for rifles and pistols. 
FEATURES
 Ultra compact and lightweight 
 Shock-proof; Suitable for most calibers 
 Multi-coated optics 
 Standard Weaver style mount MIL-STD-1913 
 Simplicity of operation 
 Quick target acquisition 
 Unlimited eye relief 
 Reticle manual brightness control – 5 settings 
 Digital memorization of the last setting of 
brightness control
 Weatherproof
Magnification
1.0x
Objective lens size (Width x Height)
0.98” x 0.63”/ 23mm x16mm
FOV at distance 110 Yards / 100 Meters
33 feet / 10 meters
Focus range
0.5 yard to infinity
Reticle type
3 МОА Center Dot Reticle
Reticle color
Red
Range of reticle adjustment at the 
distance of 110 Yards or 100 Meters 
± 6.56 feet / 2.0 meters
Eye relief distance
Unlimited
Parallax setting
50 yards / 46 meters
Overall dimensions
1.97”x1.35”x1.54”/ 50mm x 36mm x 39mm
Weight
2.47 Oz. / 70g
Power supply
3V (one CR2032 or DL2032 or ECR2032)
Length of the base mount
1.77” / 45mm
Peak shock acceleration (parallel and 
perpendicular impacts), max, G 
600 G
Estimated battery life
270 hours
Operating temperature
-4° to +122° F / −20° to +50°C
Water intrusion
Meets IPX54 rating
Humidity
Up to 93%
WARNINGS AND PRECAUTIONS
1. Be sure that the weapon is unloaded and the safety is on before mounting, and adjusting
the sight or replacing the battery.
2. Do not disassemble the unit and attempt to use it that condition.
3. To clean, use clean soft cloth dampened in alcohol, if necessary.
4. Never pour alcohol or any other liquids directly onto lens surfaces.
5. Never use paper or newspaper to clean the unit.
6. Failure to follow the above precautions may cause damage to the unit and will void the
manufacturer's warranty.
