EPeS Airsoft CNC Aluminum Hop-Up Chamber Set w/ Nozzle for Cybergun M249 Featherweight – Precision Upgrade for Unmatched Consistency

When you’re running a support weapon on the field—especially a lightweight powerhouse like the Cybergun M249 Featherweight—consistency matters more than anything. Every BB, every burst, and every engagement relies on a stable hop-up platform that can keep up with high rates of fire and heavy usage.

The EPeS Airsoft CNC Aluminum Hop-Up Chamber Set with Nozzle is the ultimate precision upgrade for Featherweight-series M249 users looking to push performance, accuracy, and reliability to the next level. Crafted from CNC-machined aluminum alloy, this chamber set replaces the stock polymer components with a rock-solid platform engineered for stability and long-term durability.

Precision CNC Engineering You Can Trust

EPeS Airsoft is known for meticulous engineering, and this hop-up unit is no exception. Machined from high-grade aluminum with tight tolerances, the chamber dramatically improves the M249’s shot consistency by minimizing flex, movement, and air leakage—the three biggest killers of accuracy in support guns.

The included CNC aluminum nozzle pairs perfectly with the chamber to create a secure, efficient air seal between the cylinder head, chamber, and hop-up bucking. With improved compression, players experience better range, tighter groupings, and more predictable trajectories, even during extended sustained fire.

Rotary Hop-Up for Fast, Reliable Adjustments

A quality support weapon needs a hop-up unit that is easy to adjust—even on the move.
The EPeS unit features a smooth, easy-to-manipulate rotary hop-up wheel that allows precise adjustments without slipping or shifting under vibration. Whether you’re fine-tuning for heavy BBs, dialing in maximum range, or adjusting between woodland and urban engagements, the rotary design ensures repeatable settings every time.

Compatible With Most TM-Spec AEG Inner Barrels

Versatility is key, and this chamber accepts most Tokyo Marui AEG-spec inner barrels, giving players the freedom to pair the setup with tightbores, widebores, stainless steel barrels, or upgraded hop rubbers for custom performance. Whether running a 6.01mm precision barrel or a 6.05mm stability-focused option, this chamber integrates seamlessly into your build.

This compatibility makes it perfect for players looking to create a fully customized M249 platform tailored to their style—whether for suppressive fire, long-range coverage, or milsim support roles.

Built Specifically for Cybergun M249 Featherweight Machine Guns

Important to note:

This hop-up chamber set is designed for Featherweight-series Cybergun M249s ONLY.

Its geometry and dimensions are optimized for the Featherweight platform, ensuring perfect alignment, compression, and reliability. This guarantees flawless fitment and eliminates the guesswork associated with aftermarket upgrades.

If you’re running a Featherweight M249, this is the chamber your platform was built to use.

Why Choose the EPeS CNC Hop-Up Chamber Set?

✔ Precision CNC aluminum construction

Strong, durable, and engineered for high-performance platforms.

✔ Included aluminum nozzle

Perfectly matched for improved air seal and shot-to-shot consistency.

✔ Improved accuracy & extended range

Experience measurable gains in both grouping and reach.

✔ Rotary hop-up wheel

Easy, reliable adjustments with no shift under recoil or vibration.

✔ TM-spec inner barrel compatibility

Allows complete customization of your barrel + bucking setup.

✔ Specifically designed for Featherweight-series M249s

Perfect fit, optimal compression, and unmatched reliability.

Built to Perform. Engineered to Last.

For support gunners who expect more from their platform, the EPeS Airsoft CNC Aluminum Hop-Up Chamber Set is a must-have upgrade. Whether you’re laying down suppressive fire, holding chokepoints, or engaging at extended range, this hop-up set ensures every shot counts.

Durable, dependable, and crafted with extreme precision—this is the performance boost your Featherweight M249 deserves.