Description
The Athlon Heras SPR 4-20×50 MIL is a 4-20×50 mm riflescope from Athlon. It is built for hunting and target shooting at medium to long range.
Why choose the Athlon Heras SPR 4-20×50 MIL
With 4-20×50 mm optics, this scope covers hunting and target shooting at medium to long range. Because the reticle sits in the second focal plane, it stays bold and easy to see, even at low power. In addition, the long-range feature set helps you dial elevation with confidence. It is a sensible upgrade if you want clearer glass and more dependable adjustments.
Key features
- 4-20x variable magnification. You can scan wide at 4x and zoom to 20x for careful shot placement.
- 50 mm objective lens. The large lens gathers plenty of light for bright views at dawn and dusk.
- 1 in main tube. It fits standard 1-inch rings and keeps the scope slim and light.
- Second focal plane reticle. It stays the same size and easy to see at every power setting.
- Parallax adjustment (10 y) keeps the target and reticle sharp at different distances.
- .1 MIL click value for fine, repeatable turret adjustments.
- 3.6 ” of eye relief, which helps protect your eye from recoil.
- Field of view: 27.9 – 5.6 ft.
Athlon Heras SPR 4-20×50 MIL specifications
| Magnification | 4-20 |
|---|---|
| Obj. Lens Diameter | 50 mm |
| Tube Diameter | 1 in |
| Eye Relief | 3.6 “ |
| Fov @ 100 Yds | 27.9 – 5.6 ft |
| Parallax Adjustment | 10 y |
| Click Value | .1 MIL |
| Length | 13.3 in |
| Weight | 25 oz |
How to choose a riflescope
When you compare riflescopes, start with magnification. Lower power gives a wider view and faster target pick-up. Higher power helps at long range. Next, look at the objective lens. A bigger lens gathers more light, but it also adds weight and needs taller rings. Also check the focal plane. A first focal plane reticle keeps holdovers accurate at every power, while a second focal plane reticle stays the same size.
Finally, make sure the turrets and reticle use the same unit, either MOA or MRAD. That makes corrections quick and simple. Mount the scope in quality rings, set the eye relief before you tighten the screws, and then zero it at the distance you shoot most.
Who it is for
The Athlon Heras SPR 4-20×50 MIL is a good fit for anyone who wants a dependable riflescope for hunting and target shooting at medium to long range. Contact us if you want advice on rings, mounts or accessories to go with it.
Browse more Long Range Scopes at Thermal Scope Hub.






Reviews
There are no reviews yet.