This YouTube video from Brownells Gun Tech™ features Caleb Savant providing a practical tip for installing a low-profile gas block on an AR-15. The technique focuses on utilizing the setscrew hole on the underside of the gas block and a dimple on the barrel to ensure perfect alignment when gas block manufacturers use that hole for their drilling process. This method is specifically for AR-15s with setscrew-anchored gas blocks and dimpled barrels, simplifying the installation process and guaranteeing precise alignment for optimal gas system function.
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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