Riflescope Discovery Optics HD GEN2 4-24×50 SFIR FFP Zero-Stop belongs to the HD/34 series, which the manufacturer recommends for precision shooting, varmint hunting, and competitive disciplines. The scope delivers a wide zoom range, precise adjustment mechanisms, and a Horus-type sniper reticle in the first focal plane with illumination. Moreover, its fast 50 mm objective and 34 mm main tube allow excellent light transmission, therefore making the optic highly effective in low-light conditions.
Key features of Riflescope Discovery Optics HD GEN2 4-24×50 SFIR FFP Zero-Stop:
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HD (High Definition) glass. The optical system uses HD glass to deliver outstanding image quality at high magnification. In addition, it reduces field curvature and chromatic aberration, therefore providing maximum clarity.
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Advanced FMC lens coating. The proprietary Full Multi-Green Coating (380–780 nm) achieves up to 95% light transmission. Furthermore, the hydrophobic layer prevents droplet formation, while anti-glare properties improve concealment. Finally, the hardened outer layer protects the lenses against scratches from dust and small debris.
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Durable aircraft-grade body. The tube is made of aerospace aluminum T6-6061, which ensures strength and reliability. A 50 mm objective and a 34 mm tube increase brightness, even in poor lighting. Additionally, the matte anodized coating resists scratches and chips from rough handling. The shockproof construction tolerates recoil energy up to 11,000 J (for example: 300 PRC, .338 LM, .408 Chey Tac). The nitrogen filling prevents internal fogging, and strong O-rings ensure water and fog resistance.
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SLT FFP reticle (Horus-type). Because the SLT reticle sits in the first focal plane, shooters can precisely measure distance and apply corrections for bullet drop and wind drift. Unlike wire reticles, the glass-etched design never shifts under heavy recoil. In addition, the reticle includes red illumination with six brightness levels, easily controlled by the side focus knob.
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Flexible parallax adjustment. Adjustment from 15 yards (13.7 m) to infinity allows sharp focus on targets at any range.
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Precision turrets. The turrets provide 1/10 MRAD clicks (1 cm at 100 m). Elevation travel reaches 34 MRAD, while windage travel offers 17 MRAD. As a result, shooters can easily zero the scope for any firearm. Moreover, the turrets include Zero Reset and Zero Stop functions, which ensure a quick return to the saved elevation setting after zeroing.
Conclusion
The Discovery HD GEN2 4-24×50 SFIR FFP Zero-Stop is an excellent option for both firearms and powerful long-range air rifles. Its combination of HD glass, rugged construction, and advanced features makes it ideal for demanding shooters who require reliability and precision.































