BCM Extractor Spring Upgrade Kit
- BCM Extractor Spring (chrome silicon, heat treated & stress relieved, shot peened)
- Crane Ind O-Ring (Mil-Spec)
- Black Extractor Insert
The BCM Extractor Spring is a heavy coil design made for the increased extractor tension required on many AR15, M4, M16 short barreled rifles. This product also improves the reliability on a standard 16'' and 14.5'' carbines.