Set Spring Shims Power Up Universal 11mm Vfc Asg Krytac Aeg Airtech Studios

Airtech Studios is a Hong Kong-based company of airsoft enthusiasts specializing in the design of airsoft parts.

Here we find a set of 4 shims made of gray and green polymer. They are compatible with 11mm-diameter spring guides for Krytac / ASG and VFC replicas. The shims provide a power gain ranging from 5 to 50 FPS depending on the combination. Ideal for adjusting and upgrading the power of your airsoft replica exactly to your desired output.

Each shim is a different size/thickness, and from the smallest to the largest, they provide a gain of 5, 10, 15 and 20 FPS respectively, and can be combined as required.