This video addresses a reported issue with FCD GBF Gas Blocks having shallow threads. The creator discusses the problem with Roger from FCD, who is committed to resolving it for affected customers. The video emphasizes that such QC issues are not unique to FCD and are observed across many well-known firearm brands, suggesting price is not a reliable indicator of quality. The creator also outlines the essential tools and knowledge required for proper gas block installation and inspection, stressing the importance of having the right equipment for gunsmithing.
This "Smyth Busters" episode from Brownells Gun Techs Steve Ostrem and Caleb Savant tackles the common AR-15 firearm myth: the necessity of dimpling the barrel for gas block installation. The video explains that while dimpling provides added security by helping to align set screws and prevent the gas block from shifting (which can cause cycling issues), it is not strictly required for proper function. Caleb favors dimpling and even prefers pinning the gas block for maximum security, while Steve admits many of his personal AR-15s are not dimpled and function perfectly. Ultimately, the myth is busted: dimpling is not mandatory but offers an extra layer of assurance for gas block stability.
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