Smyth Busters: Should You Bed an AR-15 Barrel?
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This video from Brownells Gun Techs debunks the myth that bedding an AR-15 barrel into the upper receiver improves accuracy. They explain that a snug fit is usually achieved by proper barrel nut torque, which compresses the receiver around the barrel extension. Bedding, typically with Loctite, is unnecessary for properly manufactured components and may indicate underlying issues with the upper receiver or barrel extension. The video suggests that if a barrel extension is loose after torquing, the solution is a new, in-spec upper receiver. They also briefly mention upper receiver lapping as an option but deem it unnecessary for high-quality uppers.
