DISCOVERYOPT HT GEN2 4-16x44SFIR FFP – Versatile Riflescope for Air Rifles, Rimfire and Sport Shooting

The second generation of the DISCOVERYOPT HT series represents a mid-range riflescope family developed with reliability, practical design and value for money in mind. The HT GEN2 4-16x44SFIR FFP model offers a magnification range and optical performance suited to the widest range of users, whether shooting an air rifle, a .22 rimfire carbine or a mid-range sport shooting firearm.

Optical Performance – HT Glass and Multi-Coated Lenses

The HT designation in the scope's name is no coincidence: the optical system uses High Transmittance glass with fully multi-coated lenses. This combination makes efficient use of available light, ensuring the image remains sufficiently bright and contrasty in morning and evening conditions. The 44 mm objective lens provides adequate light gathering without making the scope disproportionately heavy or bulky.

FFP Reticle – Valid Holdovers at Every Magnification

The HT GEN2 4-16x44SFIR uses a First Focal Plane (FFP) reticle arrangement. This means the reticle scales with magnification: small at 4x, large at 16x – but the MOA subtensions always represent the correct angular distance. There is no need for conversion or restriction to a single magnification: the reticle provides consistent, predictable holdover capability at every setting.

The reticle is glass-etched rather than painted, so it will not fade or change over time. The centre section features six levels of red illumination, enabling fast target acquisition in fading light, wooded terrain or at dusk.

Side Parallax Correction – From 10 Yards

Eliminating parallax error is essential for accurate shooting, especially with air rifles and .22LR firearms where shooting distances and target sizes vary considerably. The HT GEN2 side wheel allows precise parallax elimination and target focusing from 10 yards (approx. 9 metres), making the scope equally effective at close and medium ranges.

30 mm Tube and Adjustment Turrets

The one-piece 30 mm aluminium tube provides mechanical rigidity and leaves ample space for the mounting rings. The generous tube diameter allows elevation and windage adjustment ranges of 80 MOA each, providing sufficient reserve for zeroing and transitioning between different shooting distances.

The turrets operate with 1/4 MOA click increments, with clear tactile and audible feedback. Adjustments are repeatable and reliable – which matters in everyday field use.

Weather Resistance and Mechanical Durability

The tube is nitrogen filled, preventing internal fogging during temperature changes. The scope is waterproof, fog-proof and shockproof, performing reliably in rain, mist or demanding terrain. At 621 grams, the weight is notably moderate for a 30 mm tube scope with a 44 mm objective.

What's in the Box?

• DISCOVERYOPT HT GEN2 4-16x44SFIR FFP riflescope
• Sunshade
• Side parallax correction wheel
• Flip-up lens covers
• Cleaning cloth and user manual

Mounting rings are not included.

Key Specifications

• Magnification — 4–16x
• Objective lens diameter — 44 mm
• Reticle plane — FFP (First Focal Plane)
• Tube diameter — 30 mm
• Parallax correction — side wheel, from 10 YDS
• Field of view — 9.6 m / 100 m (4x) – 2.4 m / 100 m (16x)
• Exit pupil — 10.8–2.7 mm
• Eye relief — 9.0–8.0 cm
• Click value — 1/4 MOA
• Elevation adjustment — 80 MOA
• Windage adjustment — 80 MOA
• Illumination — Yes, 6 levels (red)
• Overall length — 338 mm
• Weight — 621 g
• Nitrogen filled — Yes
• Waterproof — Yes
• Warranty — 3 years (manufacturer)

Who Is This Riflescope For?

The DISCOVERYOPT HT GEN2 4-16x44SFIR FFP riflescope is aimed at shooters looking for a reliable, FFP reticle optic for an air rifle, .22LR carbine or mid-range sport shooting firearm – without paying premium prices. It is particularly well suited to those who shoot at varying distances and place high value on consistent holdover values. The solid mechanics, pleasing image quality and practical accessories (illumination, side parallax) provide an excellent foundation for both beginners and experienced shooters alike.

What Users Say

A Polish firearms magazine (gunmag.pl) described the HT GEN2 series image as "razor-sharp, bright and clean", praising the wide and precise elevation and windage adjustment range. The only minor criticism noted was that the zero-setting grid on the turrets is somewhat fine. A user on a Polish shooting forum commented on the HT series: "It makes a positive impression straight out of the box. Everything fits together without play. There is a dedicated island for the bubble level. The illumination has a wide adjustment range and there is an off position between the levels, so you do not have to scroll all the way around." (Source: strzelse.pl user review)

On the English-language Rimfire Central forum, Discovery Optics generally receives positive feedback: users highlight surprisingly good optical quality and stable mechanics for the price bracket, frequently mentioning the brand alongside Arken as one of the best budget alternatives available. (Source: rimfirecentral.com)