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Aero Precision M5 Carbine Buffer Kit. Includes a Mil-Spec 7075-T6 aluminum 6-position receiver extension (buffer tube) for AR-308 AR-10 platform. Provides a complete buffer system to support reliable cycling for Aero Precision M5 receivers and compatible builds.
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A comprehensive overview of every major component in an AR-15 build—including what's inside bolt carrier groups and parts kits—organized by assembly for new builders.
12 min read
Guide
A neutral overview of AR-15 buffer systems, covering carbine vs. rifle receiver extensions, buffer weights, springs, and how these parts affect cycling and recoil.
5 min read