Included : Precision Cylinder Taper Cylinder Head Vacuum Piston Spring Guide

Get more durability & save money
This set has a Precision Cylinder,Taper Cylinder Head,Spring Guide & Vacuum Piston. If you want total upgrade,this set is lower cost than you purchase each item.The feature is a Vacuum Piston.The vacuum system reduces a negative pressure.

Precision Cylinder : Toughnes & beauty Cylinder
We adapt new technology of 01 & 05 inner barrels called "cold hammering".This cylinder is same accuracy as Inner barrel. The inner diameter tolerance is 1/100mm In spite of cylinder. We have never seen as this accuracy tolerance of this cylinder.

4 parallel pins
We use 4 parallel pins(Dia.3mm) to combine the boss end with cylinder body.No other makers is stronger than ours.Almost maker use a split pin which is weaker than parallel pin.

The welded points
Combine shaft & End Boss.


Taper Cylinder Head
Made of SUS303. The nozzle's length is for CA M24. Its tapered line is the best suited angle for airflow.

Vacuum Piston
The body: Made of Duralumin. The End: Made of Stainless steel. We use most suitable materials for each parts, so this piston has high durability. VC Piston's head mounts Vacuum System. This system can resolve negative pressure and make long and straight shot. * VC Piston needs a little longer time to airproof than HD Piston.It is the difference (Velocity) between them.

※If use this piston to extreme power spring as PDI SS,SPR & over 2J setting,it's possible to be shorter life.
Because those sprigns gives extreme power over Toy. It's up to your operation & maintenance.

Spring Guide
Made of Stainless and Polished,so it makes smooth action. It has a thrust ring that made of derlin. Please use PDI APS Spring , SPR or SS. Not available with normal spring cause our shaft is heavier than normal. ※If you use some higher power springs like SPR or SS series,those may damage your rifle.Please be careful.

【Notes regarding CA M24!】
It has been confirmed that CA (Classic Army) M24 has M4 screws instead of M3 to attach the receiver and trigger box.
Depending on the lot it may not be possible to install it, so be sure to check your CA M24 before purchasing.

Since Classic Army's products undergo design changes frequently, there is a high possibility that the parts we handle might not compatible.

※We are unable to check the lots of CA M24 or if your rifle is compatible.
※Items purchase cannot be returned as they removed out of the package.