$89.95
This bolt assembly is machined from the correct mil-spec Carpenter No. 158® steel, shot peened for increased strength, includes tool steel machined extractor and ejector, BCM Extractor Spring, and is HPT (High Pressure Tested) and MPI (Magnetic Particle Inspected).
.223/5.56
Available through American Defense. 223 Wylde, 1-8 Twist.