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Buffer Tube Assembly from Luth-AR designed for AR-10-based platforms (LR-308, SR-25) that use a Carbine Buffer Tube. Drop-in part with no modifications needed. Weight: 3.8 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.
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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.
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