DISCOVERY HT 4-16X40 SF FFP

Description

Discovery HT 4-16X40 SF FFP – Advanced Tactical Riflescope with First Focal Precision and Side Focus Clarity

The Discovery HT 4-16X40 SF FFP rifle scope is built for shooters who demand more than just clear glass. It offers precision-based features like First Focal Plane (FFP) reticle scaling, side parallax adjustment, and a compact 40mm objective—all packed inside a durable 30mm aluminum tube. Designed for tactical marksmen, hunters, and target shooters, this scope provides a practical balance of optical performance and rugged usability. Whether you’re zeroing in at mid-range or making calculated long-range shots, the HT 4-16X40 SF FFP ensures that every adjustment you make translates into real-world impact with consistency and clarity.

Key Features of Discovery HT 4-16X40 SF FFP Rifle Scope

1. True First Focal Plane (FFP) Reticle with Constant Subtensions

This scope is equipped with a true FFP reticle, meaning the size of the reticle scales with magnification. As you zoom in or out, the spacing between the hash marks remains accurate in relation to your target, making ballistic holdovers and range estimation reliable across all zoom levels. Perfect for shooters who rely on their reticle for wind holds, drop compensation, and ranging, especially under time-sensitive or competitive conditions where speed and accuracy are critical.

2. 4–16x Magnification Designed for Tactical and Field Versatility

The 4- 16x zoom range provides exceptional adaptability across multiple shooting disciplines. Use the lower end (4x) for scanning wide terrain or engaging closer targets with fast transitions. Shift up to 16x for precise engagements at longer distances, whether you’re taking a 300-meter shot on steel or dialing for elevation on a hillside deer. The magnification ring is designed with smooth rotation and responsive control, allowing adjustments in the field without over-shifting or delay.

3. 40mm Objective with Optimized Light Handling and Compact Profile

Unlike bulkier long-range scopes, this optic’s 40mm objective lens offers the right amount of light intake while maintaining a lower profile—ideal for shooters who prefer lightweight rigs or compact platforms. It provides ample brightness during early morning and late evening hours and ensures enough clarity without weighing down your rifle or throwing off balance. This size is especially appreciated on mobile hunting rifles or AR setups that demand agility.

4. Side Parallax Adjustment for Pinpoint Reticle-to-Target Alignment

The side focus system is a game-changer when it comes to image clarity and reticle alignment. By adjusting the parallax from the side turret (rather than moving your head or re-aiming), you achieve a sharply focused target image and a reticle that stays optically centered. This reduces shooting error due to parallax shift—especially important at higher magnifications where even a small head movement can distort your point of impact.

5. Fully Multi-Coated Lenses for High-Contrast Visual Definition

Discovery uses multiple anti-reflective coatings on all lens surfaces to improve light transmission and reduce color distortion. The result is a sharp, high-definition image with natural color rendering and strong edge-to-edge clarity. These coatings not only improve performance under variable lighting—such as cloud cover or dense canopy—but also protect the lenses against dust, smudges, and minor abrasions.

6. Shockproof 30mm Aluminum Tube Built for Field Conditions

The scope’s one-piece tube is machined from aircraft-grade aluminum and treated with a black matte anodized finish to reduce glare and resist corrosion. Internally, it’s nitrogen-purged and O-ring sealed to prevent moisture, fogging, or dust intrusion. This rugged construction ensures long-term performance under recoil, environmental stress, and frequent transport. It’s tested to hold zero on medium- to high-caliber rifles, making it a trustworthy partner on hunting trips or the firing line.

7. Precision-Machined Turrets with Reliable Tracking and Reset-to-Zero

The scope’s windage and elevation turrets offer tactile, audible ¼ MOA clicks for confident dialing during elevation changes or wind drift compensation. The turrets are low-profile with protective caps, yet easy to manipulate even with gloves. Once zeroed, the settings stay locked under vibration or recoil. An internal return-to-zero system allows fast reversion to your baseline after making temporary adjustments—a valuable feature during changing shooting conditions.

8. Eye Relief and Eye Box Optimized for Stability and Quick Targeting

This scope provides stable and consistent eye relief, minimizing risk of scope bite while maintaining a forgiving eye box. Whether you’re bench shooting, prone, or in a hasty field position, the scope allows quick sight acquisition and a full sight picture with minimal head movement. This is crucial in dynamic scenarios like varmint control, hunting moving game, or engaging multiple targets under pressure.

How to Use the Discovery HT 4‑16×40 SF FFP Scope

1. Securely Mount the Scope on Your Rifle: Use 30 mm scope rings (Picatinny/Weaver compatible). Slide the scope into position, ensuring the reticle is level and your eye relief is comfortable (typically ~2.3″). Tighten the screws in a crisscross pattern to prevent tube distortion or misalignment caused by recoil. Proper mounting preserves your zero and ensures consistent accuracy.

2. Begin at 4× Magnification to Acquire Targets: Select the lowest zoom (4×) to scan and locate targets quickly. A wide field of view makes it easier to spot movement and track subjects. Once the target is centered, you’re ready to zoom in for precision.

3. Adjust Side Focus and Eyepiece for a Sharp View: Twist the side-focus knob (10 yds to ∞) until the target appears sharp and parallax-free. Then, fine-tune the reticle using the fast-focus eyepiece until the crosshair is crisp and well-defined. This ensures both your target and reticle are in perfect focus, which is crucial for First Focal Plane accuracy.

4. Zoom Up Gradually to 16× for Detailed Precision: Increase magnification smoothly as needed—up to 16×—to bring distant targets into full view. After each zoom adjustment, revisit the side focus and eyepiece focus for optimal clarity. This step-by-step method helps maintain pinpoint accuracy for mid- to long-range shots.

5. Use Reticle for Holdovers and Range Estimation (FFP): With its Mil‑Dot FFP reticle, subtensions stay true regardless of zoom. Use the hashes to estimate range and holdover—especially useful when dialing elevation isn’t an option. Simply align the target with your desired dot, and you’re good to go.

How to Clean the Discovery HT 4‑16×40 SF FFP Scope

1. Remove Dust Gently with a Lens Blower or Soft Brush: Always clear loose particles first to avoid scratching premium lens coatings. Use a soft brush or air blower—not your breath.

2. Wipe Lenses with Microfiber Cloth Using Circular Strokes: Softly clean the glass surfaces in light, circular motions. Avoid tissues or clothing—they can leave fibers or damage the lens surface.

3. Apply Lens Cleaner for Stubborn Smudges: Apply a drop of lens cleaning solution to the microfiber cloth (never directly on the lens). Gently wipe until oil and fingerprints are removed, then air-dry.

4. Clean the Scope Body with a Slightly Damp Cloth: Wipe the aluminum tube, turrets, and eyepiece housing to remove dirt or oils. Be careful around turret seals, side focus knob, and lens edges to prevent moisture entry.

5. Air-Dry Completely Before Storage: Allow the scope to dry in a clean, ventilated area. Storing while damp can lead to internal condensation or mold issues over time.

How to Take Care of the Discovery HT 4‑16×40 SF FFP Scope

1. Store the Scope in a Padded Case During Transport: Protect your optic from drops and impacts by always using a padded or hard case—even when mounted.

2. Avoid Sudden Temperature Changes: Slowly acclimate the scope when moving between cold and warm settings to prevent fogging and condensation.

3. Don’t Over-Tighten Rings or Turret Caps: Firm yet measured tightening avoids tube deformation or turret damage. Tighten screws snugly but don’t overdo it.

4. Remove Battery if Illumination Isn’t Used Regularly: Though this model doesn’t have illumination, if any accessory batteries are used, keep them removed when idle to prevent corrosion.

5. Inspect Internally for Fog or Dirt Occasionally: Periodically check the optic by pointing at a light source. If you see condensation, dust, or fungus, have the scope professionally cleaned and resealed.

Dos and Don’ts

Do’s:

• Mount using 30 mm rings with even torque

• Start shots at low magnification for easy acquisition

• Cover lenses when not in use

• Clean only with microfiber cloths and lens-safe solutions

• Use side focus and eyepiece adjustments before shooting

Don’ts:

• Don’t touch glass surfaces with fingers

• Don’t clean with household cleaners or paper towels

• Don’t leave scope in sealed, humid areas

• Don’t attempt to disassemble the scope

• Don’t tighten screws excessively

Safety Tips

1. Never Look at the Sun Through the Scope: Even at 4×, sunlight can cause severe eye damage. Always avoid direct solar viewing.

2. Ensure Rifle is Unloaded Before Adjustments: Unload and clear your firearm before mounting or cleaning the scope—safety first.

3. Keep Out of Reach of Children: Scopes are precise and delicate—store securely to prevent mishandling.

4. Transport in Proper Rifle or Padded Cases: This safeguards your setup from impacts and preserves your zero.

5. Avoid Dropping or Striking the Scope: Even robust scopes can misalign or suffer internal damage when dropped—handle carefully.

Why Should You Choose This Product?

1. First Focal Plane Reticle for Versatile Precision:
   The Mil‑Dot FFP reticle maintains accurate subtension across all zooms, enabling reliable holdovers and range estimation without dialing.

2. Smooth 4–16× Range for Multiple Scenarios:
   Offering both close-range versatility and long-range detail, it adapts gracefully to hunting, target shooting, and field use.

3. Side-Focus Parallax and Fast-Focus Eyepiece Enhance Clarity:
   Quick and accurate targeting is achieved through intuitive side focus and easy eyepiece adjustments—no guesswork, just clear sight.

4. Rugged, Weather-Sealed Build:
   Constructed from aircraft-grade aluminum, the scope is waterproof, fog-proof, and shock-resistant—ready for challenging environments.

5. Excellent Value at an Affordable Price:
   With features like FFP, side focus, tactical turrets, and compact design, this scope offers premium performance on a budget.