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Aero Precision AR-15 Enhanced Carbine Buffer Kit with H2 Buffer APRH101242. Includes Enhanced Carbine Buffer Tube (6-position mil-spec), H Heavy Buffer, Carbine Buffer Spring, End Plate with Lock Nut. Weighs ~11 oz for the base kit. Weights for different buffers: Carbine ~3 oz, H ~3 oz, H2 ~4.7 oz, H3 ~5.6 oz. Made from 7075-T6 aluminum with black anodized finish. Compatible with mil-spec stocks and standard AR-15 lowers.
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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