The BCM bolt assembly is machined from the correct Milspec Carpenter No. 158® steel, shot peened for increased strength, includes tool steel machined extractor, BCM Extractor Spring, and is MPI (Magnetic Partical Inspected).
Milspec Carpenter No. 158® Steel
HPT Bolt (High Pressure Test/ Proof)
MPI Bolt (Magnetic Particle Inspected)
Shot Peened Bolt
Tool Steel Extractor
BCM® Extractor Spring
Black Extractor Insert