This is an OEM loading nozzle from GHK, identified as Part M4-15-1J, designed for GHK M4 gas blowback (GBB) airsoft rifles. It is the original factory-spec component that directs gas from the bolt into the hop-up chamber to propel the BB and operate the blowback system.
Manufactured to GHK’s exact specifications, this nozzle ensures proper gas delivery, reliable cycling, efficient sealing, and consistent performance. It is intended as a direct replacement when the original nozzle is worn or damaged.
Key Features
Original loading nozzle by GHK
Part number M4-15-1J
Designed for GHK M4 GBB rifles
Provides correct gas routing for consistent operation
Direct replacement for the factory nozzle
Compatibility
GHK M4 GBB rifles that use the M4-15-1J specification nozzle
Restore proper gas flow and dependable performance in your GHK M4 GBB rifle with this authentic replacement part.


