Bravo Company USA, AR15 Bolt Assembly, MPI, 5.56mm

Professional Grade Weaponry, by BCM®

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).

Features

• 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
• Mil-Spec O-Ring