Maxx Model CNC Aluminum Hop-Up Chamber for M4 Airsoft AEG Rifles (Model: M4Gi)

Upgrade your ICS M4 AEG with the Maxx Model CNC Aluminum Hop-Up Chamber M4Gi, a precision-engineered upgrade designed for airsofters seeking unmatched accuracy, consistency, and durability. Built from a solid aircraft-grade aluminum block, the M4Gi hop-up chamber is crafted with tight tolerances to ensure every shot performs at its peak, providing a smooth and reliable shooting experience for serious players.

The M4Gi hop-up is compatible with ICS AEGs paired with Gas Blowback inner barrels featuring a C-Clip cut, making it a versatile option for a variety of builds. Its CNC-machined construction guarantees high structural integrity, ensuring that your hop-up chamber withstands repeated use and maintains consistent performance under heavy play conditions.

At the heart of the M4Gi chamber is a precision rotary dial designed for fine hop-up adjustments. This allows players to dial in perfect backspin for their BBs, optimizing range and accuracy. The hop-up levers and 4mm bucking nubs have been re-engineered to perform flawlessly with R-Hop, Flat-Hop, and Standard-Hop setups, keeping BBs flying straight and true shot after shot. This ensures that whether you’re engaging in long-range sniping or rapid engagements, your performance remains consistent.

The M4Gi chamber accommodates nozzle lengths from 21.00mm to 21.25mm, offering wide compatibility with aftermarket soft and hard rubber buckings without sacrificing FPS or causing BBs to drop during use. Additionally, the unit includes an interchangeable OD12mm inlet adapter, ensuring the chamber sits perfectly centered within the 12mm inner bore ICS AEG or HPA engine outlet. This precision alignment reduces wobbling and enhances air seal integrity.

One of the standout features of the M4Gi is the CNC Delrin Locking C-Clip. This advanced design secures the inner barrel tightly without twisting or wobbling, while three strategically positioned compression springs—top, bottom, and center—keep the hop-up chamber perfectly centered, straight, and airtight. Coupled with removable CNC brass side wings, this system ensures smooth installation into the outer barrel slots for a precise fit.

To address common BB feed issues, the M4Gi features a BB Latching System, designed to prevent BBs from falling out when removing the magazine. The latching arm can also be manually pressed to release remaining BBs from inside the hop-up chamber, adding convenience and minimizing waste during field play.

Installation of the Maxx Model CNC Hop-Up Chamber M4Gi can result in FPS improvements ranging from 10 to 30 FPS over stock setups, though results may vary depending on your rifle configuration. This upgrade is ideal for those looking to enhance the performance of their ICS M4 AEG with minimal compromise to durability or reliability.

Professional installation is highly recommended, as custom airsoft parts may require adjustments to fit perfectly. Discretion should be used when installing, as modifications may be necessary depending on your rifle’s specific configuration.

The Maxx Model M4Gi Hop-Up Chamber is the perfect combination of engineering precision, material strength, and functional design. Whether you’re a competitive player, a milsim enthusiast, or a dedicated hobbyist, this hop-up chamber will elevate your ICS M4’s performance, giving you a competitive edge in the field. Optimize your range, enhance consistency, and experience the precision only Maxx Model can deliver.

Manufacturer: Maxx Model
Test Results: FPS increase 10–30 FPS (depending on setup)