How to change out a gas block on an AR-15 rifle barrel

Follow some expert gunsmiths at Brownells as they walk you through simple procedures for customizing, repairing, and maintaining your firearms. This weapons video tutorial will teach you how to change a gas block on an AR-15 rifle barrel.

The AR-15 is one of the most adaptable rifle platforms in history, and building one is easier than you think. Brownells has produced video instructions on how to change the gas block on an AR15/M16 barrel. Removing the front sight housing gas block on an AR-15 A2-style barrel and replacing it with a modular gas block is easier than you think. Just follow the video.