Upgrade set ZERO ECO CUP for Tokyo Marui VSR, Well MB03, CYMA CM.700/701/708

Upgrade set ZERO ECO CUP for manual sniper rifles Tokyo Marui VSR (with 90° piston catch), CYMA CM.700/701/708 and Well MB02/03/07/11 (with 90° piston catch).

The ZERO ECO CUP set is a simplified version of the classic AirsoftPro Upgrade ZERO set, designed for the classic 7 mm spring. When developing it, we focused first and foremost on the quality and performance that is standard with AirsoftPro parts. The second goal was to find a solution that would allow for a lower price while still maintaining the required parameters. The result is a durable and purist design - only three piston components for simplicity, reliability, durability and low cost.

The package includes essential upgrade parts to increase the performance and durability of your gun.

PISTON

• The body is manufactured by precision CNC machining from highly durable 6061-T6 (Dural) aluminium alloy with a high quality anodised finish.
• Funnel-shaped rubber piston head - CUP with large contact area for maximum sealing and cushioned bump.
• The shape of the head ensures a large contact area with the cylinder wall, but at the same time a smooth and easy cocking. There is no metal to metal contact, the cylinder does not wear out and there is less friction.
• As the pressure increases during firing, the rubber presses even more against the wall and a perfect seal is achieved without air loss.
• Designed and assembled in the Czech Republic.
• When assembling, it is advisable to lubricate the head with silicone oil or apply a thin film of Vaseline to the inner wall of the cylinder.
• Dimensions: length 108 mm, outer diameter 21.8 mm, inner diameter 11.5 mm
• Weight: 27 g

SPRING GUIDE

• Manufactured by precision CNC machining from highly durable 6061-T6 (Dural) aluminium alloy with a high quality anodised finish.
• Allows the use of conventional 7 mm springs.

SPRING

• Made of high quality spring steel with proper heat treatment and ground ends.
• Chemically blackened against corrosion.
• The inner diameter of the spring is 7 mm.
• The outer diameter of the spring is 10 mm.
• Offered in a range from M140 to M155 at the customer's choice.

COMPATIBILITY

• CYMA CM.700, CM.701, CM.708
• Well MB02, MB03, MB07, MB11etc., but only newer models manufactured from about 2023 onwards and equipped with a 90° (not 45° angled) piston catch. Older models have an angled 45° piston catch, with which this set is not compatible.
• Tokyo Marui VSR-10 - only for combination with 90° piston catch, so called ZERO Trigger. It cannot be combined with the original trigger mechanism, which has an angled 45° piston catch.

WARNING

When using stronger springs, we strongly recommend installing additional upgrade parts (steel cylinder, cylinder head, trigger mechanism). Strong springs increase the stress on the internal parts, the performance gain is no longer great, they are difficult to cock and there is a risk of damage to the gun.

We are not liable for damage to the weapon due to the use of a very strong spring.