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Why DIY AR-15 Gunsmithing Can Go Wrong
A failed barrel modification shows why AR-15 reliability depends on the complete operating system—and why diagnosis, proper tooling, inspection, and testing must precede irreversible work.
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Zach Thull
Zach Thull is a career machinist, manufacturing executive, product developer, and co-founder of Dauntless Manufacturing. His background spans Department of Defense work, firearms and defense manufacturing, precision machining,…
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