Replacement Version 2 Complete Mechbox for DBoys.
For M4 / M16 Airsoft Electric Gun Series.
Should work with many other brands such as JG, CYMA, Echo 1, etc.
Approximate fps w/.20g 360-385 (individual results will vary based on complete gun).
Include Rear Wire.
Metal Bushing .
Extremely durable and advanced design.
Ready to use right out of the box; professional installation is recommended/may be required.

Weight with Package(Gram): 577
Power (Muzzle Velocity) : 360-385 FPS
Manufacturer: DBOYS