This video provides a detailed inspection and partial disassembly of a Palmetto State Armory (PSA) chrome-lined, phosphate-coated M16-cut bolt carrier group (BCG). The instructor meticulously checks various components, including gas rings, ejector, extractor, firing pin, cam pin, bolt face, and gas key staking, using specialized gauges and tools. Key findings include a weak extractor spring, a non-beveled ejector edge, and a failure in the gas key staking during a reverse torque test, indicating potential issues with proper torque application and staking. The instructor plans to replace the gas key, screws, and springs to bring the BCG up to standard.
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