This guide details the process of replacing a damaged or out-of-spec AR-15 gas key and properly staking the new screws to prevent them from backing out. It covers gauging the carrier bore, truing the mounting surface, applying sealant, torquing screws, and performing a 'golf ball' style staking for a secure gas seal. The instruction emphasizes proper torque values and the importance of a well-executed stake for gas system integrity.
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