The BCM AR-15 Extractor Spring Upgrade Kit enhances extractor tension for better reliability in AR15, M4, M16 short barreled rifles, and standard carbines.
Manufactured to high standards, the kit includes a heat-treated, stress-relieved, and shot-peened chrome silicon spring, a black extractor insert, and a Mil-Spec Crane O-Ring.
It's available in a 3 pack, ensuring quality with a 9001:2000 certified production process and designed to potentially negate the need for the included O-Ring due to the spring's strength.