Atlas Custom Works
In Stock Online! Ships Within 1 Business Day!
The VFC M4 OEM GBB Chamber is a factory original replacement part in black for VFC and Cybergun gas blowback rifles. Manufactured in Taiwan to VFC's production standards, this 30 mm nylon unit keeps weight low while maintaining strength for the gas system's pressure seal. A worn or damaged chamber often causes misfeeds, inconsistent velocity, or erratic cycling, so installing this unit restores the rifle's intended performance and alignment. It fits VFC and Cybergun M733, M727, M16A2, XM177E2, and VFC SR16E3 GBBR models. For players maintaining older rifles or restoring vintage replicas, this OEM part provides a dependable foundation for smooth operation.