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This professional-grade 3-9×40 Multi-Coated Hunting Riflescope represents the pinnacle of versatile optics for the modern marksman. Engineered by a leading precision optics manufacturer, this instrument balances high-resolution glass with a ruggedized exterior to meet the rigorous demands of professional field operations. As a primary supplier of hunting and tactical equipment, we focus on delivering consistent clarity and mechanical reliability. The 3-9x magnification range offers a flexible field of view, making it an essential component for tracking moving targets or achieving long-range precision in diverse environmental conditions.
Magnification | 3-9x |
Tube Diameter (mm) | 1 ” |
Tube Material | Aircraft Grade Aluminium |
Finish | Black Matte Hard Anodized |
Lens Coating | Fully Multi-Coated |
Objective Diameter (mm) | 40 |
Exit Pupil (mm) | 13-4.2 |
Eye Relief (mm) | 103-83 |
FOV (ft@100yds) | 37.7-12.5 |
Reticle Focal Plane | 2nd |
Reticle Material | Metal |
Illumination | No |
Turret Style | Capped |
Travel Per Rotation (MOA) | 15 |
Elevation Adjustments (MOA) | 60 |
Windage Adjustments (MOA) | 60 |
0-Reset | Yes |
Locking Turret | No |
0-Stop on Elevation | No |
W/E Click Value (MOA) | 1/4 |
Adjustable Objective Lens | No |
Side Parallax | No |
Fast Focus Eyepiece | No |
Length (mm) | 317 |
Weight (g) | 417 |

Cuinfi® 3-9x40 RIFLESCOPE
The need for high-performance,precision optics is the driving force behind all that we do.Speed and versatility that's what 3x-9x variable optics offer AR shooters who need to engage targets from point-blank out to extended ranges.And that's exactly what you're going to aaget with the Cuinfi 3-9x40.
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.


• 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®i 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
The Cuinfi® 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 Wind age corrections is extremely easy.

• Elevation and Windage Turrets
Use turrets to adjust the bullet's point of impact. The Cuinfi®5-30x56 SFIRY riflescope uses a 1/10 MIL turret adjustment on both the Windage and Elevation Turrets. Each click will move the bullet's point of impact roughly. 36"at 100 yards. The turret on the top of the riflescope is the Elevation 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.
• Capped Turrets
The Cuinfi® 3-9x40 riflescopes come equipped with Capped Turrets.This protects the turrets from accidental adjustment while out in the field,in transit,or in storage. You will need to remove the caps prior to making any adjustments on the turrets.
Note:The riflescope is still waterproof with the caps removed.
• To Make Turret Adjustments:
1. Remove the turret caps by spinning them counterclockwise.
2. Following the directional arrows,turn the dials 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,replace the turret caps.
Note: The reticle will move in the opposite direction of the turret dials. When you dial up,the reticle will move down, forcing you to aim higher, changing your point of impact upward.
• Riflescope Mounting
To get the best performance from your Cuinfi® 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.
3-9x Variable Magnification: Perfect for mid-range hunting (50-300 yards), switching from 3x for scanning dense forests to 9x for precise target acquisition on distant game.
SFP Metal Reticle: Durable metal construction ensures longevity, with a consistent size across magnification levels—calibrated at 9x for reliable bullet drop and wind holdovers.
Fully Multi-Coated Lens: Reduces glare and enhances light transmission, critical for low-light hunting periods and shaded environments where visibility is limited.
40mm Objective Lens: Gathers ample light to improve image brightness, ensuring clear views of game even in dim conditions.
1/4 MOA Click Value: Fine-tuned elevation and windage adjustments (60 MOA each) for precise zeroing and correction, adapting to varying hunting distances and wind conditions.
Capped Turrets: Protect against accidental adjustments during transport or while navigating rough terrain, preserving zero integrity in the field.
0-Reset Function: Simplifies re-zeroing after adjustments, allowing quick calibration when switching hunting locations or game types.
IP67 Waterproof & Dustproof Rating: Withstands rain, dust, and temperature extremes (-30℃ to 50℃), ensuring reliability in harsh outdoor hunting conditions.
Lightweight Design: At 417g and 317mm in length, it minimizes rifle weight, reducing fatigue during long hikes or all-day hunting trips.
Built for hunting durability, the Dawn 1 Inch Tube Riflescope features Aircraft Grade Aluminium—a lightweight yet strong material resistant to corrosion and impact. The Black Matte Hard Anodized finish provides a non-reflective surface, preventing game from being spooked by glare in open or wooded areas. Its 1 Inch Tube diameter ensures compatibility with standard hunting rifle mounts, making it easy to install on most hunting platforms. The streamlined design omits unnecessary features, focusing on core hunting needs while keeping the optic lightweight. The Fully Multi-Coated Lens works with the 40mm objective to deliver consistent clarity, and the rugged construction ensures it can withstand the rigors of outdoor use.
Big Game Hunting: Ideal for pursuing deer, elk, and wild boar, with 3-9x magnification covering typical hunting distances (50-300 yards).
Small Game Hunting: The precise 1/4 MOA adjustments and clear reticle make it suitable for targeting rabbits, squirrels, and other small game.
Backcountry Hunting Expeditions: Lightweight design and IP67 rating excel in remote areas, where portability and durability are essential for long hikes.
Varmint Control: The 9x maximum magnification allows for precise targeting of varmints, protecting crops or livestock from a safe distance.
Choosing our optics means partnering with a manufacturer that prioritizes long-term performance and professional satisfaction. We understand that in your line of work, equipment failure is not an option. Our production facility combines state-of-the-art robotic assembly with final hand-inspections by master technicians to ensure that every unit leaving our floor meets the highest standards of the industry.
Uncompromising Quality Control: Every riflescope undergoes a submerged pressure test and a high-impact recoil simulation before being cleared for shipping.
Technical Expertise: Our engineering team has decades of experience in optical physics, resulting in products that solve common field problems like glare and parallax error.
Reliable Supply Chain: We maintain consistent production cycles, ensuring that our partners have access to the inventory they need when they need it.
Design Customization: We offer various reticle options and turret configurations to meet the specific tactical or geographic requirements of our clients.
Proven Durability: Our optics are currently in use by professionals globally, proving their worth in environments ranging from humid jungles to arid deserts.
The Dawn multi-coating is a specialized spectral treatment. While standard coatings reduce general reflection, our Dawn technology is tuned to enhance contrast in low-light conditions (dawn and dusk). This allows more usable light to reach the eye when the sun is low on the horizon, extending your effective operating time in the field.
Yes. This scope is built with a reinforced erector system and aircraft-grade aluminum. It is tested to withstand the heavy, sharp recoil of magnum calibers. The internal components are shock-mounted to ensure that the reticle and internal glass elements remain secure even after hundreds of high-energy shots.
This specific model features a fixed parallax set at 100 yards. This is intentional for a hunting-focused optic, as it simplifies the user experience by removing one more dial to manage in high-stress situations. At the 3-9x magnification range, the parallax error is negligible for standard hunting distances.
During assembly, the atmospheric air inside the tube is replaced with dry nitrogen gas. This gas contains zero moisture. When the scope moves from a warm environment to a cold one, there is no moisture inside to condense on the inner lens surfaces. This ensures your view remains crystal clear regardless of the weather.
The SFP reticle remains the same size visually regardless of the zoom level. While this means the hash marks (if using a Mil-Dot) only represent specific measurements at one magnification (usually 9x), it provides a very clear and fine aiming point that does not grow and "cover up" the target at high power, which is preferred by many traditional hunters.
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