New RIANOV Eagle II Weapon-Mounted Ballistic Computer

Recently previewed at SOFIC 2014 in Tampa, Rianov has been putting the finishing touches on their latest ballistic computer, the Eagle II. Designed with high-speed, low-drag in mind, the Eagle II can store dope information for up to 16 different weapons.


Using previous dope information, the low-profile ballistic computer kit is capable of reading temperature, barometric pressure, cant, and angle to provide the shooter with a complete shooting solution. The Eagle II is easily manipulated via its remote keypad, situated anywhere on the weapon system.


The Eagle is available with rail and scope mounts for 1″, 30mm, 34mm, and 35mm scopes. The computer itself retails for $750 for US domestic customers and $900 for international prospects. Mount kits retail for approximately $59 each.

Photo is courtesy of

Photo is courtesy of

Detailed specs from Rainov below:

Weight ~1.7 oz.
Display LCD 16 Character x 3 Rows
User Interface 5 Function Keypad – Remote placement
Operating Temperature Range -40°F to 140°F (-40°C to 60°C)
Altitude Range -1,600ft to 29,600ft (-300m to 9,000m)
Barometric Pressure Resolution 0.01 INHg
Optical Ranging > 5,000 Yards
Angular Range (Slope) ±85° (Look Angle)
Angular Range (Cant) ±90°
Angular Resolution < 0.1°
Battery Type CR-123 (1 required)

Nathan S

One of TFB’s resident Jarheads, Nathan now works within the firearms industry. A consecutive Marine rifle and pistol expert, he enjoys local 3-gun, NFA, gunsmithing, MSR’s, & high-speed gear. Nathan has traveled to over 30 countries working with US DoD & foreign MoDs.

The above post is my opinion and does not reflect the views of any company or organization.


  • Eurocopter

    This, as well as TrackingPoint, takes the technical aspect of long range shooting out of the equation, essentially making it half the fun in my opinion. For military use, sure, but for us civvies, I´d rather learn how to judge range from, say, a proper mil-dot reticle, witch is quite doable.

    I heard an Israeli company was developing a range and ballistic calculator based on LIDAR, but I don´t know what came out of it.

    • JumpIf NotZero

      takes the technical aspect of long range shooting out of the equation

      lol… No. Tracking point with the trigger lock takes some fundamentals and minimalism the requirements, but in no way does this work even remotely similar. You don’t seem to understand what you are looking at here.

  • Hagge

    My phone has a complete weatherstation + an app that does this for “free” since I already have the phone. Only thing I have to do is laser distance, chrono load and judge wind. Judging wind will always be the skillset every lr shooter needs even if they use this or any other computer instead of rangecards.

    • JumpIf NotZero

      Pretty much. But like other people don’t seem to understand, this system linked does nothing for body position, reading a scope, adjusting for and knowing parallax, trigger control, and follow through.

      It’s giving you dope. That’s all. Nothing a ballistic app doesn’t already do better.

      Distance is nothing but a number. I need to hold 4 mils, great, thanks computer. Do I care that 4 mills is 500y? No. I know my dope, I hold/dial my dope. It’s wind and everything else that makes a shot or not.

  • Garrett

    So this is supposed to replace a $100 range finder, a small weather station ($50, or free app on my phone), and a free app on my Android? Pass.

    You still have to read the wind. When they can come up with a device for that, then I might be interested.

  • iksnilol

    Doesn’t seem that useful, maybe more practical than all the other doodads for shooting at range?

    I am not interested until they make something that can compensate for wind.

  • patrickiv

    Is there a reason that the device has a cable connecting two parts? What does that box at the end of the cable do? They seem small enough that you could build it as a single piece and forego the cable.