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This next iteration of AR-15 gunsmithing and building covers the buffer, recoil spring, and how to “tune” your black rifle or pistol. For the usual readers, feel free to bookmark like the rest. AR-15 BUFFERS, SPRINGS & WEIGHTS EXPLAINEDIt’s a small, unremarkable little part, but it’s one of the most important pieces in your AR-15: We’re talking about the buffer. The buffer and recoil spring in your AR platform helps manage recoil but more importantly, it controls the action of the bolt carrier group (another guide is available for the AR-15 BCG, too) and it helps your weapon cycle any…

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