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AirsoftPro ZERO Upgrade Set for VSR and CYMA CM.700, CM.708
AirsoftPro ZERO upgrade kit for VSR and CYMA CM.700, CM.708 is a complete air system upgrade set designed for Tokyo Marui VSR-10 and CYMA CM.700 / CM.708 airsoft sniper rifles. It includes a lightweight hybrid piston, stainless steel spring guide with bearing, and an upgrade spring. The kit is designed to improve performance, reliability, and service life when used with a ZERO Trigger (90°).
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AirsoftPro ZERO Upgrade Kit for VSR and CYMA CM.700, CM.708
This upgrade kit contains the essential components needed to increase the performance of a manual sniper rifle. The hybrid piston combines a lightweight CNC-machined aluminum body, a stainless steel sear catch, and two POM guide rings for smooth cylinder operation. The package also includes a stainless steel spring guide with ball bearing, allowing the use of both standard 7-mm and more powerful 9-mm springs, together with an upgrade spring in the selected power rating. For Tokyo Marui VSR-10 rifles, the kit is compatible only when used with a ZERO Trigger featuring a 90° piston sear. It cannot be used with the original 45° trigger mechanism.
Key Features
Lightweight Hybrid Piston
The piston combines a CNC-machined 6061-T6 aluminum body, a stainless steel sear, and two POM guide rings for excellent durability and smooth operation.
Air-Expanding Piston Head
The sealing O-ring expands under air pressure during firing, improving cylinder sealing and helping maintain consistent performance.
Stainless Steel Spring Guide with Bearing
The spring guide is made of stainless steel and features a ball bearing that reduces spring stress during compression.
Compatible with 7-mm and 9-mm Springs
The enlarged piston bore and spring guide design allow the use of both standard 7-mm and higher-power 9-mm upgrade springs.
Ready for High-Power Upgrades
The upgrade spring is manufactured from high-quality spring steel with heat treatment and is available in variants from M110 to M190.
Technical Specifications
- Piston body material: 6061-T6 aluminum alloy
- Piston sear material: Stainless steel
- Guide rings: 2× POM
- Piston length: 105 mm
- Outer piston diameter: 21.8 mm
- Inner piston diameter: 13.5 mm
- Piston weight: 30 g
- Spring guide material: Stainless steel
- Spring guide bearing: Ball bearing
- Compatible springs: 7 mm and 9 mm
- Spring material: Heat-treated spring steel
- Spring finish: Chemical black oxide
- Spring diameter: Approximately 12.8 mm
- Available spring ratings: M110 to M190
Compatibility
- CYMA CM.700
- CYMA CM.708
- Tokyo Marui VSR-10 (only with a ZERO Trigger featuring a 90° piston sear)
Package Contents
- 1× Hybrid piston
- 1× Stainless steel spring guide with ball bearing
- 1× Upgrade spring (selected variant)
Notice
- For Tokyo Marui VSR-10 rifles, a ZERO Trigger with a 90° piston sear is required.
- The kit is not compatible with the original 45° trigger mechanism.
- Using very powerful springs (M180 and M190) may significantly increase the cocking force.
- The manufacturer accepts no responsibility for damage caused by an improperly selected spring.
| Color | Red |
| Body/receiver material | Metal |
| Piston head | Metal |
| Spring guide | Metal |