A .936″ gas block diameter refers to the size of the barrel journal where the gas block is installed, typically found on heavy profile AR-15 and AR-10 barrels used for precision or competition shooting. This larger gas block size is designed to regulate gas flow for reliable cycling and works with .936″ diameter barrels, compatible gas tubes, and upper receiver components. It’s ideal for builds requiring enhanced accuracy, heat management, and stability due to the heavier barrel profile.
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