Discovery Optics HS 4-16x44SFAI FFP

• First focal plane DLT FFP MOA reticle: the reticle scales with magnification, so holdovers and subtensions stay consistent from 4x to 16x for faster corrections in field shooting and practical target work.
• 4-16x magnification range: low power remains usable for shorter distances and moving targets, while 16x gives the extra image scale needed for precise shot placement and load development at longer range.
• Side focus from 10 Yards-Infinity: close parallax adjustment makes the scope suitable for rimfire use and short-range zeroing, while still covering centerfire distances without compromising aiming precision.
• Locking tactical turrets: exposed turrets allow direct dialing for elevation and windage, and the locking function helps prevent accidental movement when the rifle is carried or handled between stages.
• 30 mm tube with fully multicoated optics: the tube provides a solid platform for adjustment travel, while the lens coatings support better contrast and light transmission for clearer target definition in mixed light.

About the Discovery Optics HS Series

The Discovery Optics HS series sits in the brand’s Precision Series range and is built for shooters who want a practical balance of target-style control, field durability, and usable magnification for varied distances. Discovery Optics positions the HS line for competition, tactical use, hunting, and long-range shooting, so the series is designed to cover more than one role rather than being limited to bench use alone.

Across the current HS family, the emphasis is on a first focal plane reticle, a 30 mm tube, and locking turrets, giving the shooter a consistent reticle scale and direct dialing controls in a compact precision-oriented layout. The series is also described as using an XED low-dispersion optical system, intended to improve image clarity and reduce distracting color fringing around high-contrast edges. Discovery Optics rates the HS line for 1500G shock resistance and states compatibility with calibers from .22 LR to .338, while the series is also listed as waterproof and fogproof for demanding outdoor use.

About the Discovery Optics HS 4-16x44SFAI FFP

The Discovery Optics HS 4-16x44SFAI FFP is a variable-power riflescope aimed at shooters who need one optic to cover rimfire practice, general hunting use, and mid-range precision shooting. Its 4-16x magnification range gives it a broad working envelope: 4x remains manageable for closer targets and improvised positions, while 16x offers the image scale needed for more deliberate aiming on small targets or distant steel. The 44 mm objective lens keeps the scope trim enough for practical rifle setups while still supporting a bright, usable sight picture.

The DLT FFP MOA reticle is placed in the first focal plane, which means its holdover references stay proportional throughout the zoom range. In practice, that makes the scope easier to use for ranging, corrections, and hold-based shooting without being tied to one specific magnification. This model is non-illuminated, which keeps the layout straightforward for daylight shooting and target work.

Its locking tactical turrets with 1/4 MOA clicks are suited to shooters who prefer to dial corrections rather than rely only on reticle holds. Side parallax adjustment from 10 Yards-Infinity is especially useful on a scope in this class, because it supports close-range rimfire work as well as longer centerfire distances. The 30 mm tube, fully multicoated lenses, and waterproof, fogproof, shockproof construction round out a design focused on repeatable handling in mixed field and range conditions.

About Discovery Optics

Discovery Optics, presented by the company as DISCOVERYOPT, states that it was established in 2009 and lists its main operations in Bao'an, Shenzhen, Guangdong, China. The company focuses on rifle scopes for shooting and hunting and also offers electro-optical sighting devices, including thermal imaging products. Its riflescope catalog spans several lines, including the XED, ED, LHD, and HD series, showing a product range that covers both conventional optical sights and more specialized configurations.

Within the riflescope category, Discovery Optics offers models with both first-focal-plane and second-focal-plane reticles, reflecting a lineup aimed at different shooting styles, from general hunting use to more dial- and hold-based precision work. That breadth is relevant to the HS line, which sits within the company’s precision-oriented offering rather than its simplest entry-level optics.

Main Features

• Magnification: 4.00 x - 16.00 x
• Objective lens diameter: 44.00 mm
• Main tube diameter: 30 mm
• Reticle position: 1. focal plane - FFP
• Reticle: DLT FFP MOA
• Illumination: No
• Adjustment per click: 7mm/100m - 1/4MOA
• Elevation adjustment range: 10.18 mrad / 35.00 MOA
• Windage adjustment range: 10.18 mrad / 35.00 MOA
• Turret type: Tactical
• Turret locking: Yes
• Zero stop: No
• Eye relief: 80.00 mm - 90.00 mm
• Field of view: 1.32 m/100m - 5.23 m/100m
• Parallax adjustment: Yes - side focus
• Parallax range: 10 Yards-Infinity
• Exit pupil: 2.75 mm - 11.00 mm
• Lens coating: Fully Multicoated
• Length: 350.00 mm
• Weight: 776.00 g
• Waterproof: Yes
• Fogproof: Yes
• Shockproof: Yes

Warranty

Discovery Optics covers the HS series for 3 years. This warranty period matches the specification for this model and the manufacturer’s stated policy for HS riflescopes.

In the Box

• Scope
• Spec Card
• User Manual
• Lens Cleaning Cloth
• Warranty Card & QC Card
• Lens Cap