MP5 (WE) 180% Hammer Spring (Item No.43)

This upgrading 180% hammer spring is specially made for professional shooter and competition needs, because it increases the force of hammer to hit the valve pin, therefore this spring increases the shooting power and fits extreme high pressure gas, and the supreme quality Japan steel piano wire has outstanding durability and reliability. All products are made for airsoft only.  They are not made for real steel firearms.