Sprinco M4 AR-15 Enhanced Ejector Spring / Safety Selector Detent Spring

Sprinco M4 / AR-15 Enhanced Ejector Spring / Safety Selector Detent Spring Just like their buffer springs, the Sprinco AR-15 Ejector Springs are made from high-quality Chrome Silicon wire stock that has been heat-treated, stress-relieved, and cryogenically processed to produce long-lasting durability. This ejector spring is designed for AR-15 bolt carrier groups and provides a spring pressure similar to OEM, but it will maintain that pressure for much longer. Whether you are replacing worn springs or setting some aside for future use, Sprinco springs are the only ones you will ever need. Note: This spring doubles as the AR-15 / AR-10 Safety Selector Detent Spring. Features For AR-15 BCG Made from Chrome Silicon wire stock Heat-treated, stress-relieved, and cryogenically processed Much longer service life than OEM Improves reliability