This hop up chamber is ideal for optimising or maintaining your replicas.
This is an improved model by Modify for M4/M16 replicas.
Type: Hop-Up Chamber
Compatible with: all standard Marui M4 replicas
Supplied with two types of adjustment.
- Caliber (in mm)
Modify has gone from manufacturing watch parts to airsoft guns to becoming a leading manufacturer in airsoft.
As a seasoned technician, Modify continues to help make Taiwan the capital of airsoft, while standing behind the made in Taiwan quality guarantee.