I feel lucky to have stumbled upon this at SHOT Show, because I was extremely impressed by the engineering and machining of the MEAN LLC delayed blowback mechanism and immediately attempted to sweet talk my way into a complete upper receiver loaner for review.
Three hardened ball bearings lock the bolt head into the barrel extension. By installing the bolt head one of three ways you can adjust the amount of lockup tension and delay to fine-tune the action to your gun, your ammo, and suppressed/unsuppressed use.
Continue reading SHOT Show: Roller Delayed Blowback AR-9 From MEAN LLC at The Truth About Guns.
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