order information
325FPS Basic Upgrade Plan
For Gearbox Version 2 (M16/M4/G3 Series, MP5 A4/A5/SD5/SD6)
For Gearbox Version 3 (AK/SIG/AUG Series, G36C)
-Installed
~~ Custom Spring
~~ Fuse removal ( Reduce resistance )
~~ Unidirection piston head
This plan will increase the effective range and power but still durable
Price : US$15
We can come with relative gun. Plan includes parts and installation charges only. 
Power Version 2 Version 3
Economy Upgrade Plan 
-Installed 350 fps US$30 US$30
~~ PDI or Systema spring 400 fps US$38 US$38
~~Metal Bushing
~~ Fuse removal ( Reduce resistance )
~~ Unidirection piston head  
Standard Upgrade Plan  350 fps US$80 US$80
-Installed 400 fps US$90 US$90
~~ PDI or Systema spring 450 fps US$90 US$95
~~ Fuse removal ( Reduce resistance )
~~ Unidirection piston head
~~Metal bushings
~~Systema flat gear set 
Advanced Upgrade Plan
-Installed 350 fps US$220 US$190
~~ PDI or Systema spring 400 fps US$225 US$198
~~ Fuse removal ( Reduce resistance ) 450 fps US$240 US$203
~~Systema metal bushings
~~Systema flat gear set
~~Systema aluminium piston head with bearing
~~Systema poly carbonate / aluminium piston
~~Systema spring guide with bearing
~~(For version 2 - Reinforced gearbox) 
~~(For version 3 - Systema spring guide with bearing)
Power option from 350fps to 500fps (Please state the power option)
After sales service
Repair service is provide, please send email to us before you ship the products.
Shipping cost will charge to the customers.   
We also welcome order of Pistols, a bulk purchase of Gearbox and Parts.
If any specific order you prefer, please state clearly via email order