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°).

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

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.