| Quantity: | |
|---|---|
The Cuinfi 3-9×40 Hunting Rifle Scope is a high-performance, precision optical tool designed for AR shooters and hunting enthusiasts who demand speed, versatility, and accuracy. With a 3-9x variable magnification range, this scope excels at engaging targets from point-blank to extended ranges, making it a reliable companion for various shooting scenarios. Equipped with a second focal plane (SFP) reticle and 11-level illuminated settings, it delivers clear visibility in low-light conditions while maintaining consistent reticle clarity across all magnifications. Crafted with durability in mind, it features an IP67 waterproof rating, 1500G shock resistance, and a temperature range of -30℃~50℃, ensuring performance in harsh outdoor environments. Whether you’re a seasoned hunter or a competitive shooter, the Cuinfi 3-9×40 riflescope combines functionality and ruggedness to elevate your shooting experience.
Initial Set Up
• Reticle Focal Plane (Second Focal Plane vs First Focal Plane)
All riflescope reticles can be termed either first focal plane (FFP)or second focal plane(SFP), with respect to the reticle's internal location within the erector system. An SFP reticle is visually consistent in size and weight across the magnification range; however the subtension values are only accurate on one magnification, typically the highest.In contrast,an FFP reticle will scale with magnification, and their subtensions used for ranging, holdovers, and wind corrections will remain constant. The reticle size will appear larger at higher magnifications, and smaller at low magnification.
• Second Focal Plane Reticle
These Cuinfi® 3-9x40 riflescope features a second focal plane(SFP)reticle.SFP reticles are located within the riflescope near the magnification ring.This style of reticle will appear consistent throughout the entire magnification range.
Note: The Cuinfi® 3-9x40 riflescope reticle are calibrated at the highest magnification.For the hashmark's value to be true, you need to be on the highest magnification.
• Ocular Focus – Fast Focus Eyepiece
The ocular focus is typically a one-time adjustment used to focus the reticle for maximum sharpness. This adjustment is slightly different for every shooter. A clearly focused reticle is a critical component for accurate shooting. When setting up a riflescope, this should be the first adjustment you make and should only need to be changed from user to user, or if your eyesight changes over time.
• Parallax Adjustment
The Cuinfi® 3-9x40 riflescope is non-adjustable for parallax correction and is set from the factory to be parallax-free at 100 yards(90 meters). When shooting at distances other than 100 yards, using good consistent shooting form and cheek weld will prevent most problems with parallax.
• Magnification Adjustment
The Magnification Adjustment Ring is used to change the riflescope's "power." The Cuinfi® 3-9x40 riflescopes are variable powered optics with a 3x-9x optical design. To adjust your optic's magnification,rotate the Magnification Adjustment Ring clockwise,or counterclockwise,to increase or decrease the magnification to your desired level.
TURRETS
TheCuinfi® 3-9x40 riflescope is offered in Minute of Angle (MOA).
Note: The top of both the windage and elevation turret will state what unit the riflescope is laid out in.
• Minute of Angle (MOA)Adjustment
Minute of Angle is an angular unit of measurement commonly found in riflescopes.It is used to measure bullet drop,wind holdovers,and for measuring targets. Both the reticle and turrets will be laid out in specific MOA values.1 MOA equates to 1.047"at 100 yards,2.09"at 200 yards,3.14"at 300 yards,etc.Being an angular unit of measurement,the value of 1 MOA will increase/decrease proportionally as you increase/decrease the distance you are shooting.For this reason,think about all of your adjustments in MOA,rather than a linear unit such as inches.If your turret,reticle,and drop chart are all laid out in MOA,adjusting your riflescope for bullet drop or windage corrections is extremely easy.
• Elevation and Windage Turrets
Use turrets to adjust the bullet's point of impact. The Cuinfi® 3-9x40 riflescope uses a 1/4 MOA turret adjustment on both the Windage and Elevation Turrets.Each click will move the bullet's point of impact roughly. 25"at 100 yards. The turret on the top of the riflescope is theElevation Turret, which is used to adjust the bullet's point of impact up and down. The turret on the right-hand side of the riflescope is the Windage Turret and is used to adjust the bullet's point of impact left and right.
• Exposed Turrets
The Cuinifi® 3-9×40 riflescopes come equipped with exposed turrets. This allows the shooter to quickly dial in their elevation and windage adjustments.
• To Make Turret Adjustments:
1. Pull up on the turret so that it is no longer in the locked position.
2. Following the direction arrows, turn the dial in the direction you wish the bullet’s point of impact to change. (If you hit high, dial down. If you hit low, dial up. If you hit right, dial left. If you hit left, dial right.)
3. When finished adjusting, push down to lock the turret in place.
Illumination
The Cuinifi riflescopes use a variable intensity illuminated reticle to aid in low-light performance.
• To Turn Illumination On
To activate the illumination, rotate the Illumination Control Knob in a clockwise direction.
• To Adjust Illumination Brightness
Once the illumination is on, continue to rotate the Illumination Control Knob clockwise to cycle through 11 levels of brightness. To decrease the brightness, rotate the Illumination Control Knob counterclockwise.
• To Turn Illumination Off
To turn off the illumination, rotate the Illumination Control Knob all the way in either direction to dot.
Note:When the illumination is off, the reticle will appear black.
Riflescope Mounting
To get the best performance from your Cuinifi® 3-9x40 riflescope, proper mounting is essential. Although not difficult, the correct steps must be followed. If you are unsure of your abilities, it would be best to use the services of a qualified gunsmith.
• Rings and Bases
The Cuinfi® 3-9x40 riflescope feature a 1 inch main tube. Be sure to select a base and matching rings appropriate for your riflescope's mount according to manufacturer's instructions.
Tip: Selecting the proper ring height to provide appropriate clearance between the riflescope and any part of the rifle is paramount.The proper height will also allow for a comfortable head position and aid in establishing a solid and consistent shooting position.A ring's height will not have an adverse effect on accuracy and overall range or performance.
• Eye Relief and Reticle Adjustment
After installing the bottom ring halves on the mounting base,place the riflescope on the bottom ring halves and loosely install the upper ring halves.Before tightening the riflescope ring screws,adjust for maximum eye relief to avoid injury.
1. Set the riflescope to its highest magnification.
2. Move the riflescope fore and aft in the rings until you achieve a full,unobstructed sight picture.
3. Without disturbing the fore-aft placement,rotate the riflescope until the reticle is level.Use a leveling tool(s) such as feeler gauges or bubble levels and a plumb bob to aid in this process.
4. After leveling the reticle,tighten and torque the ring screws down per manufacturer's instructions.Use caution and do not over-tighten ring screws.
The scope features a second focal plane (SFP) reticle located near the magnification ring, providing a consistent size and weight across the entire 3-9x magnification range. Calibrated at the highest magnification, the reticle’s hashmark values remain accurate when set to 9x, making it ideal for ranging, holdovers, and wind corrections. Unlike FFP reticles, the SFP design ensures the reticle doesn’t scale with magnification, offering a familiar sight picture for quick target acquisition.
Equipped with exposed elevation and windage turrets calibrated in Minute of Angle (MOA), this riflescope allows precise adjustments for bullet drop and wind interference. Each click delivers a 1/4 MOA adjustment, translating to roughly 0.25" of movement at 100 yards—ensuring pinpoint accuracy. The turrets feature a user-friendly lockable design: pull up to unlock, adjust per direction arrows, and push down to lock, preventing accidental changes during use.
The variable intensity illuminated reticle enhances visibility in low-light conditions (dawn, dusk, or dense foliage). With 11 brightness levels, you can cycle clockwise to increase brightness or counterclockwise to decrease, tailoring the reticle to your environment. When illumination is off, the reticle appears black for standard daylight use, offering versatility across all lighting scenarios.
The fast-focus ocular adjustment allows shooters to quickly sharpen the reticle for maximum clarity— a one-time setup (adjustable for different users or changing eyesight). A sharply focused reticle is critical for accurate shooting, making this feature a top priority for initial scope setup.
Built to withstand tough outdoor conditions, the scope boasts an IP67 rating (dustproof and waterproof) and 1500G shock resistance. It can endure heavy recoil, rain, and dust, ensuring reliability during hunting trips or competitive shooting events. The wide temperature range (-30℃~50℃) means it performs in extreme cold or heat.
The objective lens features multilayer coating that boosts light transmittance to 85-90%, delivering bright, clear images even in low-light environments. Reduced glare and improved contrast help identify targets with precision, a key advantage for hunting or long-range shooting.
The Cuinfi 3-9×40 riflescope features a robust 30mm main tube (overall length: 320mm, weight: 480g) — a balance of durability and portability. The tube diameter ensures compatibility with most standard mounts, while the lightweight design prevents adding excess bulk to your rifle. The housing is crafted from high-grade materials that resist corrosion and wear, ensuring long-term performance.
The magnification adjustment ring is easy to grip and rotate, allowing quick changes between 3x (wide field of view for close targets) and 9x (high magnification for long-range shots). The illumination control knob is strategically placed for one-handed operation, even when wearing gloves. Exposed turrets are tactile and easy to adjust, with clear direction arrows for intuitive use.
Ideal for big-game hunting (deer, elk, wild boar) and small-game hunting (rabbits, squirrels), the scope’s variable magnification adapts to forested areas (3x for close encounters) and open fields (9x for long-range shots). The illuminated reticle excels in dawn/dusk hunts, while IP67 protection handles rain or muddy conditions.
Perfect for target shooters honing their skills, the 1/4 MOA turret adjustments and SFP reticle ensure consistent accuracy during practice sessions. The fast-focus eyepiece and parallax-free design (set at 100 yards) reduce eye strain and improve shot consistency.
For AR shooters in competitive events (3-gun, long-range matches), the scope’s speed and versatility shine. Quick magnification changes and precise turret adjustments allow shooters to engage multiple targets at varying distances efficiently.
Law enforcement and tactical users benefit from the scope’s rugged design, illuminated reticle, and fast target acquisition. The IP67 rating and shock resistance make it suitable for high-stress scenarios, while the exposed turrets enable rapid adjustments in dynamic environments.
The Cuinfi 3-9×40 uses a second focal plane (SFP) reticle, which remains consistent in size across magnification ranges (accurate at maximum 9x). A first focal plane (FFP) reticle scales with magnification, but SFP offers a familiar sight picture for quick target locks—ideal for shooters who prioritize speed.
No, it is factory-set to be parallax-free at 100 yards (90 meters). For shots beyond or below 100 yards, maintaining a consistent cheek weld and shooting form minimizes parallax issues.
Rotate the illumination control knob clockwise to turn it on and cycle through 11 brightness levels. Rotate counterclockwise to decrease brightness. Turn the knob fully in either direction to shut off illumination (reticle turns black).
The scope has a 1-inch main tube, so you’ll need compatible bases and rings (follow manufacturer guidelines). Choose ring height to ensure clearance between the scope and rifle, and use a leveling tool to align the reticle for accuracy. Professional gunsmith installation is recommended for beginners.
Yes, it features 1500G shock resistance, designed to handle recoil from high-powered rifles (AR-15, hunting rifles). The durable construction and secure turret lock prevent damage or misalignment from recoil.
5 / 5
10 Comment
Customer comment