12-16-2016, 12:55 AM
Measure your inside diameter. Look at the specs for various gas blocks. Most of the manufacturers sites will have the dimensions.
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AA 16" barrel handguard question
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AA 16" barrel handguard question - by sqeezeatrigger - 12-16-2016, 12:46 AM
AA 16" barrel handguard question - by 1075 tech - 12-16-2016, 12:55 AM
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