Brownells AR-15/M16 Carrier Key Staking Tool

The Brownells Carrier Key Staking Tool is a dedicated gunsmithing tool designed to properly stake the carrier key screws on AR-15 and M16 bolt carrier groups. Correct staking secures the carrier key screws against loosening under fire, ensuring reliable gas system function. This purpose-built tool simplifies a critical step in AR-15/M16 assembly and maintenance, making it a must-have for gunsmiths and serious builders.