This guide details the process of diagnosing and repairing an AR-15 that has sustained fire damage. It emphasizes inspecting critical components like springs and headspace, and outlines the steps for replacing compromised parts, specifically focusing on the extractor, ejector, and disconnector springs, to restore functionality. The instruction is delivered with high authority, demonstrating professional-grade gunsmithing skills.
This video details the ongoing troubleshooting process with a Brownells BRN-180 upper receiver in 7.62x39. The primary issue encountered is the bolt locking back on the bolt catch instead of the magazine, occurring across multiple lower receivers. The reviewer also notes occasional magazine over-seating with specific lower receivers.
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