Sprinco M4 / M16 / AR-15 5-Coil Extractor Upgrade Kit The Sprinco AR-15 Extractor 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 5 coil extractor spring upgrade kit is designed for AR-15 bolt carrier groups and provides high spring pressure than OEM springs and performs well if the rifle is dirty. This upgrade kit also includes the Mil-Spec extractor insert and Viton O-rings. Whether you are replacing worn springs or setting some aside for future use, Sprinco springs are the only ones you will ever need. 5 coil design Made from Chrome Silicon wire stock Heat treated, stress relieved, and cryogenically processed Includes Mil-Spec extractor insert and Viton O-Rings Click here to browse our entire selection of Bolt Carrier Groups & Parts.
