This original FightLite Industries factory replacement part is designed to maintain your FightLite rifle or upper in peak condition. The MCR Main Action Spring works with belt-fed MCR rifles and upper receiver assemblies, and is also compatible with FightLite magazine feed models. Manufactured in the USA, this precision spring delivers reliable cycling and consistent performance across both feeding systems.
Backed by a lifetime guarantee, this main action spring provides the dependable performance FightLite MCR owners require from an OEM component. Whether you’re using a belt-fed setup or magazine feed configuration, the MCR Main Action Spring offers the durability and precision fit essential for long-term rifle reliability.
