MAXX Model CNC Aluminum Hopup Chamber M4Gi (for ICS M4 AEG with split gearbox) Gearbox Parts Highly polished inner surface for

Highly polished inner surface for reduced friction and smooth piston movement

The RetroArms CNC Aluminum Silent Piston Head is designed for airsoft players and technicians who demand both performance and noise reduction

With a durable polymer housing

this upgrade part offers a stylish

Lightweight design with smooth

MAXX Model CNC Aluminum Hopup Chamber M4Gi (for ICS M4 AEG with split gearbox) Gearbox Parts Highly polished inner surface forThe MAXX Model CNC Aluminum Hopup Chamber M4Gi is designed specifically for ICS M4 AEG rifles with a split gearbox. This model delivers precision BB feeding, consistent air seal, and smooth hop adjustment ideal for builders looking for a reliable and straightforward hop up solution for ICS platforms. The M4GI features a lightweight and simplified design while retaining the CNC machined aluminum quality that MAXX Model is known for, making it perfect