[PDI] Precision Pulsonite Cylinder Set VC for Tokyo Marui VSR-10

Palsonite treatment makes use of the vacuum effect

[Precision Pulsonite Cylinder]
We have developed a low-friction, highly durable cylinder that uses "Palsonite," a nitriding process that boasts the highest precision and corrosion resistance among stainless steel nitriding processes. The low friction that promotes piston speed and the improved hardness that maintains roundness ensure excellent performance over a long period of time. The Palsonite cylinder, which delivers smooth airflow, is the perfect combination for a vacuum system that improves airflow.

●Inner diameter φ22mm (genuine diameter) ●Inner diameter tolerance ±1/100mm ●SUS304 (stainless steel) ●Laser welding used ●Uses parallel pins Stainless steel cylinder with the same size (inner diameter) as the VSR genuine cylinder.

These cylinders are not made from standard stainless steel pipes, but are cold-forged for precision, achieving an inner diameter tolerance of ±1/100mm. This is the ultimate cylinder series, meticulously refined for wear resistance in bolt-action systems, where efficient piston acceleration and air ejection are key. *OEM pistons, springs, spring guides, and cylinder heads are not compatible.

"Consideration of the connection point with the boss"
We pay close attention to the connection with the post body, which can be considered the neck of the custom cylinder.
While many cylinders use hollow split pins, we have determined that these do not offer the same level of durability, and have therefore adopted solid parallel pins. In addition, by welding the joints, we have created a cylinder that is tough enough to withstand repeated cocking over a long period of time.

[Tapered cylinder head]
This part determines how efficiently the air pushed out of the cylinder can be converted into output.
At PDI, we attach the same importance to the inner barrel and chamber, and by using SUS303 and tapering the interior at an optimal angle, we have achieved output conversion that is greater than that of a regular shaped head.
Fully compatible with PDI Hop Chamber Ver.2.
*This product can be attached to the VSR-10 genuine cylinder, but it may not be able to lock securely due to shallow threads on the genuine cylinder. This is due to the fact that the screw part of the genuine cylinder is changed depending on the batch, so we cannot currently announce when the batch will be safe, and therefore we do not recommend using it on the genuine cylinder.

[VC (vacuum) piston]
The best-selling PDI piston from the APS series is now used in the VSR.
It is divided into four parts, with the head and body made of durable aluminum alloy, the ring made of highly durable POM with excellent sliding properties as it comes into contact with the cylinder, and the rearmost part, which is the part that bears the most load on the sear, made of carbon steel. By using the right materials in the right places, we have created an ideal piston in terms of durability.
The "Vacuum System" eliminates negative pressure in the center of the head, eliminating the "bullet pullback" that occurs after firing, eliminating negative force and allowing the BB to fly straighter.

For more information about the VC system, please see here.

*Note: Regarding POM part colors:
Due to a shortage of raw materials (POM), it is becoming difficult to procure materials.
The color of the piston ring (POM) of the product you receive will be either white (POM) or black (POM) depending on the situation.

*The piston design was changed due to a lot change in January 2021.
Changes
- Piston head design change
- Piston body design change
There are no changes to the materials used.
-Although there have been design changes, manufacturer testing has confirmed that the initial velocity and other specifications are the same as before the design change.

[Spring guide]
The spring guide is a part that is susceptible to stress caused by the expansion and contraction of the spring when cocking, so a POM thrust ring is installed at the base to reduce the load directly on the guide base. The fully machined stainless steel construction boasts high dimensional precision, and even the shaft is thoroughly polished to achieve a smooth pump action.

*Please use the end cap bolts that meet the specifications sold by SPARK. Marui genuine bolts are original specifications, so they have a smaller diameter than standard bolts. If used with a PDI cylinder, the threads may not fit. The VSR-10 compatible cap bolt specification is M4 x 12mm.

Specifications
■Compatible models:
#Tokyo Marui VSR-10
■Set contents: Precision Pulsonite cylinder, tapered cylinder head, VC spring guide, VC (vacuum) piston

*This product cannot be used with the "VSR-10 BORE UP".
*This product is designed with a thick spring.
*The VSR-10 uses a special trigger system, so cocking may be difficult after installation. Please refer to here for more information.
*Cylinders, cylinder heads, etc. are modified and improved every certain period (lot), so it may be difficult to assemble parts from older lots together with the latest lot. This can be resolved by assembling parts from the latest lots together.


※please note※
If you have customized your airsoft gun or replaced parts, be sure to measure the bullet speed using a bullet speed meter to ensure it is within the legal limit (possession of bullets over 0.98 J is prohibited). Also, be careful not to exceed the legal limit during the work.