FX Impack M4 . The FX Impact M4 is a high-quality, modern air rifle made by FX Airguns, a company from Sweden. It is designed for people who enjoy target shooting, hunting, or just shooting for fun. This rifle is known for being very accurate, powerful, and easy to customize.

It is called “M4” because its design looks similar to the famous M4 rifle used by the military, but it is completely an airgun, not a firearm. It uses compressed air (Pre-Charged Pneumatic – PCP) to shoot pellets, so you don’t need gunpowder or cartridges.

Key Features of the FX Impact M4

1. Quick Set Trigger

The FX Quick Set Trigger allows shooters to easily adjust the trigger pull to suit different shooting styles, from hunting to match-grade precision, with a simple screw adjustment.

2. Enhanced Rigidity

A new, thicker top plate design increases the overall rigidity of the rifle, improving accuracy and performance.

3. Improved Grip

The redesigned FX UG1 grip offers enhanced comfort with a more defined shape, palm swell, and beaver tail, providing a confident hold for precise shooting.

4. AMP MKII Regulator

The upgraded brass piston regulator provides stronger, faster, and more consistent refresh rates, handling higher pressures up to 170bar effortlessly.

5. Redesigned High-Capacity Magazine

New magazines are crafted from stronger materials and feature an enhanced internal mechanism to ensure smooth rotation, even when loaded with heavy slugs.

6. Extended Scope Rail

The dovetail rail, now machined for added strength and flexibility, allows for perfect alignment and optimal mounting positions for your optics.

7. Refined Design Elements

Subtle design updates enhance practicality and aesthetics, with new lines and cutouts for easy access and a cohesive look that stays true to the Impact’s iconic style.

 

Performance & Accuracy

The FX Impact M4 is engineered for precision. Whether you’re engaging in long-range target shooting or small game hunting, this rifle delivers exceptional accuracy and power. Its modular design allows shooters to adapt the rifle to their specific needs, ensuring optimal performance in various conditions

 

Precision Engineering

At the core of the FX Impact M4 is the Smooth Twist X (STX) barrel system, which allows for interchangeable liners. This feature enables shooters to optimize accuracy for various pellet types and calibers, ensuring consistent performance across different shooting scenarios.

Power and Energy Output

The Impact M4 delivers impressive energy levels across its available calibers:

• .177 (4.5 mm): Up to 47 Joules (35 ft-lbs)

• .22 (5.5 mm): Up to 117 Joules (87 ft-lbs)

• .25 (6.35 mm): Up to 135 Joules (100 ft-lbs)

• .30 (7.62 mm): Up to 169 Joules (125 ft-lbs)

• .35 (9.00 mm): Up to 211 Joules (156 ft-lbs)

These power outputs are achieved using the Slug Power Kit and the 800mm barrel, catering to both pellet and slug ammunition.

Shot Consistency and Efficiency

The FX Impact M4 boasts a brass piston AMP MKII regulator, which provides stronger, faster, and more consistent refresh rates, handling higher pressures up to 170 bar effortlessly. This ensures consistent shot-to-shot performance, crucial for both hunting and competitive shooting.

User Feedback on Accuracy

Users have reported impressive accuracy with the FX Impact M4:

• One reviewer noted achieving less than 14mm groups at 30 yards and pellet-on-pellet shots at 25 yards, even hitting 75-yard golf balls in the wind.

• Another user achieved half-inch or better groups at 50 yards using the 33.9gr pellets at velocities between 880 to 920 fps.

   

  Why Choose the FX Impact M4?

  The FX Impact M4 stands out as a premier choice for airgun enthusiasts due to its exceptional performance, advanced features, and versatility. Here’s why it’s a top pick:

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  🎯 Precision and Customization

  • Smooth Twist X Barrel System: This system allows for easy swapping of barrel liners, enabling shooters to fine-tune accuracy for various pellets and slugs.

  • Quick Set Trigger: The new trigger system offers adjustable settings, allowing users to switch between hunting and match-grade configurations with a simple adjustment.

  • AMP MKII Regulator: Provides consistent shot-to-shot performance with faster refresh rates, handling pressures up to 170 bar.

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  🔧 Enhanced Build and Ergonomics

  • Improved Rigidity: A thicker top plate enhances overall strength and reduces potential point-of-impact shifts.

  • Ergonomic Grip: The new UG1 AR-style grip provides a comfortable hold with palm swell and beaver tail design.

  • Redesigned Magazines: Durable, high-capacity magazines ensure smooth rotation, even with heavy slugs.

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  🛠️ User-Friendly Features

  • Fewer O-Rings: Reduces maintenance needs and minimizes leak risks.

  • Modular Design: Easily swap barrels and calibers to suit different shooting needs.

  • Adjustable Scope Rail: Allows precise optic placement for optimal eye relief.

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  🌍 Versatility for All Shooters

  • Multiple Caliber Options: Available in .177, .22, .25, .30, and .35, catering to various shooting disciplines.

  • Suitable for Hunting and Competition: Its power and accuracy make it ideal for both small game hunting and competitive shooting.

   

Care & Maintenance for the FX Impact M4

Proper care and maintenance ensure your FX Impact M4 performs consistently and lasts for many years. Follow these simple steps to keep your rifle in peak condition:

1. Regular Cleaning

• After each shooting session, wipe down the exterior with a soft, dry cloth to remove dirt, dust, and moisture.

• Use a high-quality, airgun-safe oil to lightly coat metal surfaces to prevent rust.

• Clean the barrel occasionally with a suitable cleaning kit designed for PCP air rifles, using gentle strokes to avoid damage.

2. Lubrication

• Apply a small amount of airgun-approved lubricant to the bolt, hinge points, and other moving parts.

• Avoid over-lubricating, as excess oil can attract dust and debris, potentially affecting performance.

3. Air Tank Maintenance

• Always check the air tank pressure before use. Do not overfill; follow the manufacturer’s recommended PSI.

• Ensure connections and quick-fill adapters are free from dirt and damage to prevent leaks.

• Store the rifle with a partially filled tank to maintain proper air seal and prevent damage to internal components.

4. Magazine Care

• Remove magazines after use and clean to remove debris.

• Inspect the internal mechanism periodically to ensure smooth rotation, especially if using heavier pellets.

5. Storage

• Store the FX Impact M4 in a cool, dry place, away from direct sunlight or extreme temperatures.

• Use a padded case or gun safe to protect the rifle from impacts and environmental damage.

6. Periodic Checks

• Inspect screws, mounts, and accessories to ensure everything is tight and secure.

• Have a qualified airgun technician check the regulator and internal components annually or after high-volume use.

7. Avoid Common Mistakes

• Never use petroleum-based oils or cleaning agents inside the air system.

• Avoid dry-firing (shooting without a pellet), as it can damage the rifle’s valve system.

• Do not store the rifle fully pressurized for long periods; it may compromise seals and components.

 

FX Impact M4 – Frequently Asked Questions (FAQ)

1. What calibers are available for the FX Impact M4?
The FX Impact M4 is available in .177, .22, .25, .30, and .35 calibers. You can easily switch between calibers with the modular system.

2. What barrel lengths are offered?
You can choose from Compact (500mm), Standard (600mm), Sniper (700mm), and Extended (800mm) barrel configurations to suit different shooting styles.

3. How many shots can I get per fill?
The number of shots varies depending on the caliber, power setting, and barrel length. On average, expect 30–100 shots per full 300–580cc air tank, depending on your configuration.

4. Is the FX Impact M4 suitable for hunting?
Yes! The FX Impact M4 is ideal for small to medium game hunting, offering high precision, adjustable power, and multiple caliber options.

5. Can I adjust the power output?
Absolutely. The FX Impact M4 features the Quick Tune system and adjustable hammer spring, allowing micro and macro adjustments for optimal power and accuracy.

6. How do I maintain the rifle?
Regular maintenance includes cleaning the barrel, lubricating moving parts, inspecting magazines, and storing properly. Follow the care tips provided to ensure consistent performance.

7. Does the FX Impact M4 come with a warranty?
Yes, the FX Impact M4 comes with a manufacturer’s warranty. Check your retailer’s page for specific terms.

8. Can I use slugs and pellets?
Yes. The FX Impact M4 supports both pellets and slugs, depending on the caliber. Ensure you use high-quality ammunition for best performance.

9. Is it suitable for target shooting?
Definitely. Its accuracy, modular design, and adjustable power make the FX Impact M4 excellent for long-range target shooting and competitions.

10. How do I switch calibers?
The FX Impact M4 features an Interchangeable Caliber System (ICS), allowing you to quickly change barrels and magazines to swap calibers safely and easily.

FX Impact M4​

FX Impact M4​ . The latest and greatest from Sweden is the new Impact M4 Compact. Based on the versatile Impact platform, this version has a 500mm barrel, making the overall length just 25″, and a 300cc carbon fiber bottle. With a 250 BAR fill, the Impact Compact is capable of 150 shots in .177, 110 shots in .22 cal, 70 shots in .25 cal, and 30 shots in .30 cal. You can expect anywhere between 25 and 80 FPE, depending on caliber, which is enough for small to medium game hunting.

The Impact Compact achieves these numbers by utilizing the new FX Power Plenum 750, which is included, that increases the firing chamber volume to a whopping 75cc. The Impact M4 also offers the rear Power Block, so those looking to make the most of the power potential for shooting slugs can do so with ease. The remaining features are all standard on the Impact, those include the AMP MKII regulator, external hammer spring adjustment, and adjustable valve control. The Smooth Twist X Superior barrel liner makes this powerful compact deadly accurate!

FX Impact M4​

Swedish manufacturer FX Airguns continues to turn out new models, blending power and accuracy into a very small package with the new Impact M4 Compact! Featuring a 500mm barrel and an overall length of just 25″, the Compact only comes up short in one area, and that’s the length! A stubby 300cc removable carbon fiber bottle is the only other departure from the standard Impact, and still provides a solid shot count despite the small size.

From a 250 BAR fill, you can expect up to 150 shots in .177, 110 shots in .22, 70 shots in .25 and 30 shots in .30 caliber. With plenty of energy to accompany those shot counts, you can expect up to 25 FPE in .177, 45 FPE in .22, 60 FPE in .25 and a whopping 80 FPE in .30! Long time fans and followers of the Impact platform may recall that early versions of the standard size rifle produced about those same specs, with a longer barrel and larger air cylinder. FX is able to achieve this impressive stat line thanks to the power plenum 750! Adding 75cc of firing chamber volume and new valving allows for these impressive numbers that simply couldn’t be achieve before this innovation.

FX Impact M4​

This is also due, in part, to the rear Power Block. While the power plenum stages the power capabilities of the FX Impact, the rear block handles that transfer of power much like a car’s carburetor. FX redesigned the rear block and the valve housing which allows for better airflow, efficiency, and power potential. The Power Block will be especially useful for those who desire to shoot heavy slugs. Those shooting heavy slugs are encourage to add the FX Impact Tungsten Hammer weight to also allow for higher working pressures.

Of course, the rest of the rifle packs all the innovation the Impact is known for. This includes the AMP MKII regulator, external hammer spring adjustment and valve control. Otherwise known as the new Quick Tune System, this easy-to-adjust system is unlike any other on the market! The Compact still utilizes the Smooth Twist X Superior barrel liner system, which has proven to be astonishingly accurate. This means you can easily change out calibers and liners. You can even turn your Impact Compact into a standard size Impact if you so desire. The possibilities are truly endless with this platform!

This FX Impact M4 Compact – Black is the fourth generation of what by now must be the most successful all-round PCP of all time. This ultra-accurate and multi-adjustable PCP air rifle has a modular base, making it suitable for virtually every shooting discipline. From benchrest to hunting and everything in between.

FX Impact M4​

Compared to the previous model, the Impact M3, some radical and some more subtle changes have been made to bring the FX Impact M4 to yet a higher level while also improving usability. We’ll guide you through the most important features and changes. A so-called FX Impact M3 versus FX Impact M4.

The Dual Regulator system has made room for a single AMP MKIII regulator with a brass piston. With that, it’s stronger and more consistent, with a higher refill flow thrown in too. Besides that, this single regulator is more than capable of withstanding high working pressures up to an impressive 170 bar (2500 psi). Note that working pressure is something different than filling pressure, with the latter being 250 bar (3600 psi). The regulator can be adjust with a screw at the rear of the trigger inside the trigger guard.

The FX Impact M4 Compact – Black has a revisited top plate. The plate is thicker, which gives more rigidity to the whole air rifle, and it now features a dovetail rail that allows you to slide the 30 MOA Picatinny rail exactly there where you want it. That Picatinny rail has become slightly longer too, giving you even more freedom in mounting. The forward tilt of the rail with 30 MOA, will offer you a broader adjustment range on the rifle scope if used on long distances.

FX Impact M4​

In every aspect, the complete trigger unit is new. As the FX Impact M4 Compact – Black is such a universal platform, FX has been looking at what was needed to make the trigger adjustable and refined in such a way, that it would suit all types of shooting. When hunting, you’d like a predictable long stage while in sport shooting, you’ll prefer a featherweight trigger with a refined glass-like breaking point. With the Quick Set Trigger, all it takes to change between these two is to adjust a single screw. Besides that, you can reposition the whole trigger unit, setting it further or closer. And both stages are adjustable, while the trigger blade is adjustable in height and rotation.

With a regulated 75 cc air buffer, the FX Impact M4 Compact – Black has plenty of air at the ready behind the valve to deliver plenty of power. Enough to give even the heaviest slugs the perfect velocity. The large capacity of the plenum also allows for a lower regulator pressure than would be the case with a smaller plenum.

The FX Impact has always been know to be adjustable on many levels. So it comes as no surprise that the FX Impact M4 Compact – Black can be finetuned left, right and center. We’ve already pointed out the adjustable regulator, but that’s not the extend of this rifle’s adjustability by far. With the power knob on the front, just above the air reservoir inlet, you can adjust the preload of the valve spring. When turning anti-clockwise, indication rings appear and the more rings you see, the more air will be let through.