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PSA AR15 Premium MilSpec Diameter Buffer Tube. 6-position milspec buffer tube made from 7075-T6 aluminum with a dry film coating inside. Finish: Black.\n\nDetails:\n- Material: 7075-T6 Aluminum\n- Position: 6-Position Mil-Spec diameter\n- Finish: Black (dry film coated inside)
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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.
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