Airtech Studios AEG Spring shim set of 4 – 11mm

Designed specially for AEG spring guides, the shims are designed to slide onto the spring guide inside the gearbox to create tension in the existing spring. The more shims the more tension and more power. 

• Shim 1 – Increase by 5 FPS
• Shim 2 – Increase by 10 FPS
• Shim 3 – Increase by 15 FPS
• Shim 4 –  Increase by 20 FPS

Features:

• 11mm Inner diameter – Compatible with Krytac, VFC and ASG spring guides
• Made of Ultra tough Polycarbonate

Spring guide, spring or other accessories are not included.