This guide details the disassembly of the Brownells BRN-15 Upper Receiver, covering handguard removal, barrel inspection, and muzzle device specifics. The video features Caleb from Brownells, demonstrating a professional approach to understanding the components. Key takeaways include the materials used (7075-T6 and 6061-T6 aluminum, 4150 steel), gas system details (mid-length), and barrel preparation (dimpling).
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