ZERO upgrade kit for CM.703, CM.707

Kit for CYMA CM.703 and CM.707 manual sniper rifles. Includes piston, rod and spring. Essential parts to increase the performance of your weapon.

Hybrid piston

• The piston body is manufactured by precision CNC machining from a 6061-T6 aluminum alloy light but very durable with a High quality anodized finish
• The piston retainer is Stainless steel for good durability even with strong springs
• The piston has two polyacetal (POM) sliding rings
• The piston head is pressure-resistant with a sealing O-ring (the O-ring expands when fired to improve sealing)
• Increasing the piston bore requires the use of a 9mm thicker upgrade spring
• Dimensions : length - 76.8mm, outer diameter - 21.8mm, inner diameter - 13.5mm
• Weight : only 28g

Spring guide

• Manufactured by precision machining from stainless steel
• Equipped with ball bearing to reduce spring tension when compressed
• Allows the use of conventional 7mm springs and thicker 9mm enhanced springs.

Spring

It is specifically designed for this game, as it is shorter than the commonly sold sniper rifle springs and must fit into a tight space when compressed.

• Made of high quality spring steel with proper heat treatment and ground ends
• Chemically blackened against corrosion
• The outer diameter of the spring is approximately 12.8mm