The Sightron SVIII 5-40x56 ED FFP IR Zero Stop is a flagship long-range riflescope built for shooters who demand uncompromising optical performance and repeatable precision. At the heart of this premium riflescope lies Extra-Low Dispersion (ED) glass paired with Sightron's exclusive MC-777 seven-layer fully multi-coated optics, delivering exceptional clarity, color fidelity, and light transmission across the full 5–40x magnification range. The oversized 40mm tube unlocks a massive 40 MRAD of elevation travel and 20 MRAD of windage, while the internal Zero Stop mechanism provides a tactile and audible positive stop so you can return to zero without hesitation — critical in any competition or precision shooting scenario.
The illuminated First Focal Plane reticle (available in LRM or MH-6) scales correctly at every magnification, and Sightron's patented ExacTrack system ensures your adjustments track true with zero drift. Whether used as a precision target riflescope or an airgun scope for field target competition, the SVIII delivers IPX7 waterproof and nitrogen-charged fogproof performance backed by Sightron's Lifetime Performance Guarantee.
| Magnification | 5–40x |
| Objective lens diameter | 56mm |
| Tube diameter | 40mm |
| Eye relief | 3.7–3.8 in |
| Field of view (low–high) | 7.22m–0.9m @ 100m / 23.7–2.97ft @ 100yds |
| Click value | 0.1 MRAD @ 100m |
| Max elevation adjustment | 40 MRAD @ 100m |
| Max windage adjustment | 20 MRAD @ 100m |
| MRADs per revolution | 10 MRAD |
| Parallax range | 10m to infinity |
| Focus type | Side focus |
| Focal plane | First (FFP) |
| Illumination positions | 11 (rotary dial, off/on) |
| Battery | CR2032 |
| Waterproof rating | IPX7 |
| Length | 16.8 in |
| Weight | 49.0 oz |
| Finish | Matte black |
