Mad Bull AEG Non-Linear Tune-Up Spring (GG10-12)

The Mad Bull Airsoft AEG Non-Linear Tune-Up Spring comes in a wide range of color-coded springs that perform just as well as they look. The color is hard-coated onto the springs via a special process and is not painted on. Mad Bull has been testing these springs thoroughly and has proven that the length and force remain consistent throughout.

Features:

• Consistent shots!
• Non-linear design (calculated)
• Color coating to reduce effects from the environment
• Designed & Manufactured by experienced engineers.
• Premium quality German piano wire