The Mad Bull series of springs is made for serious airsofters who want a reliable shot every time they pull the trigger. This spring will get your gun shooting about 400fps
After 6 months try and error, we finally made the most "colorful" spring which is more beautiful than anyone else. (So does the performance) (The color is not painted. It is hard-coated by special process.) Calculated carefully by computer and test by 100000 times punching. Our spring has been proofed that the length and force are still consistent. (See here)
We just want to proof that our spring is not just a "spring". It is a MadBull spring and it is "colorful."
Other features: * Consistent >100000 shotsl * Non-liner design (calculated) * Color coating to reduce effects from environment * Design & Made by experienced engineers. * Premium quality German piano wire
Airsoft weapons can sometimes look very realistic and could easily be mistaken for a real weapon. To avoid such confusion, all airsoft weapons are required to have a vibrant orange tip no shorter than six (6) millimeters from the end of the muzzle. Any tampering with the required orange tip will result in a total void of warranty and could even result in legal consequences.
