Videos tagged with Receiver Damage

This guide details how to inspect AR-15 Bolt Carrier Groups (BCGs) for critical manufacturing defects, specifically focusing on peening marks and burrs on the carrier rails. Instruction from School of the American Rifle highlights how these imperfections, often resulting from attempts to correct loose carrier key pockets, can cause significant damage to the aluminum upper receiver. Proper inspection is crucial for ensuring BCG longevity and firearm reliability.