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Aero Carbine Buffer Tube - Anodized Black; Mil-Spec Carbine Receiver Extension (buffer tube) for AR-15. 6-position, 7075-T6 aluminum, Finish: Anodized Black. Made in USA. Weight: 3.1 oz.
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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