Athlon Optics Heras SPR 4-20x50 SFP Riflescope
- Mounting Type: Picatinny Mount
- Night vision: No
- Material Type: Aluminum
- Item Weight: 1.56 pounds
Last refreshed Jun 22, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A capable mid-range scope on glass and features, though a damaged-on-arrival report is worth planning around with a return-friendly seller.
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ASIN: B0BVNNTJC1Category: Rifle Scopes
Overview
A 4-20x50 second focal plane rifle scope with a side focus parallax adjustment, 1-inch main tube and an etched glass AAGR2 MOA reticle. Built for shooters who want a wide magnification range and a repeatable zero stop on a mid-priced optic.
Athlon pairs fully multi-coated glass with a zero stop turret system, so you can dial for a shot and return to your original zero without hunting for the mark. Locking turrets add a pull-up-to-adjust, push-down-to-lock step meant to keep the dial from getting bumped off zero in the field.
- Side focus parallax adjustment
- 1-inch aircraft grade aluminum tube
- Etched glass AAGR2 MOA reticle
- Fully multi-coated lenses for light transmission
Who it's for
Shooters who want one scope to cover both closer, faster shots and longer precision work through a 5x zoom range. Not aimed at buyers who need a first focal plane reticle for holdover at every magnification.
Pros and cons
- Wide 4-20x zoom range on one scope
- Zero stop turret returns to a fixed zero
- Locking turrets resist accidental adjustment
- Waterproof, fogproof and shockproof construction
- Second focal plane reticle only reads true at max zoom
- At least one unit arrived damaged
Performance notes
The second focal plane AAGR2 MOA reticle stays a constant size regardless of zoom, which keeps it easy to see at low power for quick target acquisition but means holdover marks only read true at max magnification. The zero stop and locking turrets are built for shooters who dial rather than hold over, letting you crank elevation for a long shot and spin straight back to a mechanical zero stop.
Specifications
| Brand | Athlon Optics |
|---|---|
| Dimensions & fit | |
| Item Weight | 1.56 poundshigher than 65% of 238 rifle scopes |
| Construction & materials | |
| Material Type | Aluminum |
| Color | Black |
| Compatibility & installation | |
| Mounting Type | Picatinny Mount |
| Compatible Devices | Rifle |
| Other details | |
| Night vision | No |
| Sport Type | Hunting |
| Item Type Name | Hunting Scope |
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Frequently asked questions
Is the Athlon Heras SPR 4-20X50 a first or second focal plane scope?
Second focal plane, so the reticle size stays constant as you zoom and holdover marks are only accurate at maximum magnification.
Does it have a zero stop?
Yes, Athlon's zero stop system lets you dial elevation for a shot and return the turret to your original zero position with a hard mechanical stop.
What tube diameter does it use?
A 1-inch aircraft grade aluminum tube.