MP5 (WE) 80% Delayer Spring (Item No.29)

This upgrading 80% delayer spring is specially made for professional shooter and competition needs, because it reduces the force on ejector lever to release the knocker, therefore it reduces the rate of wear off at ejector lever and bolt, and it also smooths the blow-back movement of the bolt in order to increase shooting efficiency.  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.