Cronus BTR 4.5-29×56 APRS FFP IR MIL UHD

Write a Review
Rated 5.00 out of 5 based on 9 customer ratings
(9 customer reviews)

Where to BuyMSRP: $1,999.99


This has been rated as one of the best Rifle scopes out there. Whether you’re in to precision long-range shooting, tactical applications, or extreme long range hunting adventures, the new Cronus BTR rifle scope is just what you need. The new Cronus BTR is redesigned to be even better!  We improved the parallax adjustment yard markings to go from 25 yards to infinity.

We have added markings at 300, 500, 800 and 1600 yards. It has been designed with a new reticle, plus a re-designed battery compartment to make it easier to adjust the illumination. If you are looking for the best in rifle scopes, look no further.

This  Cronus BTR 4.5-29×56 Model has APRS first focal plane illuminated MIL reticle in it.  Please click the link for detailed reticle subtension…

SKU#:210110 (Black)

SKU#:210110B (Bronze)



UHD Glass Extra-Low Dispersion glass significantly reduces chromatic aberration giving you an utmost bright and sharp image with true color reproduction.
Illuminated Reticle The illuminated reticle provides greater visibility during dusk and dawn and other low ambient light environment.
First Focal Plane Reticle First focal plane reticle stays valid at all power settings allowing you to fully utilize the specially designed reticle that shrinks or grows along with your target as you zoom in or out. The reticle offers quick target engagement at low power while offering precise holdover positions with finer details.
Etched Glass Reticle Reticle etched on the glass that provides excellent backing support for complex reticle design and offers great durability and much higher shock resistance to recoil
Advanced Fully Multicoated Fully Multicoated optics effectively reduces reflected light and increases the transmission of light giving you a brighter image than normal single coated lenses
XPL Coating XPL Coating gives you an extra protection on the exterior lenses from dirt, oil and scratches or anything else mother nature can throw at you.
Precision Zero Stop System The system allows you to lock down your zero position and dial back to it with a sharp and precise stop right at your zero mark even you are turning it in pitch-dark or blind folded.
High Precision Erector System The high precision erector system processed by high precision CNC machine with +/- 0.0001mm tolerance level to provide you the most accurate power settings and smoothest magnification change
6061 T6 Aluminum The 6061T6 aircraft grade aluminum tube that has exceptional strength and superior mechanical integrity will protect these world class optics no matter what punishment you throw at it.
Exposed Tactical Direct Dial Exposed Direct Dial Turrets for elevation and windage allow you to quickly make adjustment as you needed and engage your target within a blink of your eyes
One Piece Tube Construction Heat treated one piece tube gives the scope extra strength over multi-piece tubes. A one piece tube also is better at keeping moisture out thus keeping your scope fog proof for the life of the product
Waterproof Waterproof to protect the scope in the harshest weather conditions or if accidently submerged underwater
Fog proof Fog proof to allow you to immediately engage your target when you take your rifle to cold ambient temperature from warm inside
Shockproof Robust mechanical system with special designs on both control and erector system that give you the ultimate recoil resistance to withstand 1000G recoil for 1000 times.
Argon Purged Argon Purging uses the inertia gas with bigger size molecules to purge any moisture out of the tube giving you better waterproofing and thermal stability .



Magnification 4.5-29
Objective Lens Diameter 56 mm
Reticle  APRS FFP IR MIL, Glass Etched 
Surface Finish Matte/Brown 
Lens Coating Advanced Fully Multicoated 
Extra Coating Xtra Protective Coating 
Tube Material 6061 Aluminum 
Tube Diameter 34 mm
Exit Pupil  8.8-1.9mm
Eye Relief 3.6-3.8"
Field of View @100 yards 24.8-3.83 ft
Click Value 0.1 MIL
Adjustment range per rotation 10 MIL
Total Elevation Adjustment 32 MIL 
Total Windage Adjustment 18 MIL 
Turret Style Exposed Direct Dial
Parallax Adjustment Side Focus – 25 yards to infinity
Purging Material Argon 
Length 14.3"
Weight 35.8 oz
User Instruction Manual Download 
Reticle Manual  Download 

9 reviews for Cronus BTR 4.5-29×56 APRS FFP IR MIL UHD

  1. Rated 5 out of 5


    I love this riflescope crystal clear all the way to 29 power. Compared it to my vortex gen 2 R this Cronus BTR was a bit clearer when observing a target at 1100 yard . This scope is absolutely wonderful for the price

  2. Rated 5 out of 5

    Schur Firearm Sales

    My son and I have been shooting the Cronus BTR riflescope at PRS events all season and love the product. Chrystal clear and the MILs are dead on and track true from windage and elevation adjustments. Zero stop works perfectly. Thanks Athlon!

  3. Rated 5 out of 5

    Mark Kranz

    Fantastic scope and competes with top tier scopes at a much more affordable price point. Nice crisp and clear glass with zero chromatic aberration, tracking is spot on, turret clicks are crisp, positive, audible and tactile. The illumination is true daylight bright (best I’ve seen other than my Aimpoints) and the parallax knob and magnification lever rotate smoothly. I still have to put some more time behind it, but so far it is right there with my Razors, Atacr F1, IOR’s, etc. Also, Athlons customer service is top notch and they are a pleasure to deal with. I highly recommend you try them out!

  4. Rated 5 out of 5

    Kenny woods

    ok Here is my review of the athlon cronus btr scope so far. I am comparing it to my vortex razor hd amg 6x24x50mm ffp scope. It’s retail is 2500.00 and a fine scope at that. I kept hearing how clear and good the athlon scopes were so I took a chance and glad I did. Comparing the two scopes side by side far as clarity and sharpness the athlon actually edges out the razor amg. It actually kind of made me sick at my stomach a 700.00 less scope is out performing the more expensive scope. Now the razor amg has a few features that the Cronus doesn’t like locking turrets and illumination seams a little better if you use this sort of thing I usually do not. Now the magnification the razor looks almost as magnified at 24 as the Cronus does at 29 at far distances they look almost the same on max magnification between them but you can see better and a little clearer on the athlon cronus btr. Now far as tracking it has been spot on and it’s held zero so far. Only complaint is I really think a 1800.00 should come with lens covers and a sunshade but comparing to a scope at 700.00 more. You can purchase a set of lens and a sunshade for less than a 100.00 and I wish you hey had locking turrets although the zero stop is nice and easy to set as well as turrets have good resistance and audible clicks when turning it. This scope is a real deal for a tier 1 quality scope. Thanks

  5. Rated 5 out of 5

    Chris McInnis

    After seeing the improvements made on the second gen Midas and the world class service I had received I once again pulled the trigger. I now have the new Cronus BTR sitting on top of my RPR. My local range only goes out to 500 meters. Before all I could see were white medal gongs. But now I can see that those gongs are actually life size rabbits and chickens.

    I’m very happy with my Athlon and plan on using them in the future for other builds. Keep up the good work guys and don’t lose focus on where you started!

  6. Rated 5 out of 5


    Great optic. Feels well built. Magnification adjustment is very smooth with just the right amount of tension. Focus knob is the same, smooth and tension is good. Love the reticle in Mils. Glass blew me away, competes above it’s pay grade for sure. The turrets are tactile and audible, I love the feel. Unfortunately no locking turrets but not a dealbreaker for me. Not too heavy but not a lightweight either. Lighter than a razor gen 2. The CA is nearly non existent for my eye. Does darken slightly at full magnification but all optics I’ve used do the same or worse. Highly recommend this scope!

  7. Rated 5 out of 5

    Andrew Roberson

    The milrad version of the Athlon Cronus BTR is an excellent scope. I bought it sight unseen after looking at other high end scopes, and the value seemed too good to pass up. I was able to mount the scope on a Friday, zero on a Saturday morning at a local match and hit targets based off of known drops from 93.5 to 1096 yards using the turret system. The tracking was spot on. The turrets and glass are great, and the zero stop is so simple to use. I compared to scopes that cost twice as much and I don’t feel like I am missing anything, but really feel like I got a great deal!

  8. Rated 5 out of 5


    I use this scope in competitions a lot and get to compare it to nightforce, kahles, and vortex and I can honestly say I like this the best, straight forward design that is built to last and with some of the best glass in the world, would definitely recommend for a competition shooter or long range target shooter.

  9. Rated 5 out of 5


    I have two of these. One on a savage 12fv in 223 and one on a savage ba 110 in 338 LM. Was able to accurately hit a 10″ x 5″ target at 1090 with each and I’m sure as my skill improved I could go much farther (with the 338)

    The scopes are great as is Athlon support

Add a review

Your email address will not be published. Required fields are marked *

WordPress Image Lightbox