A 5.56 rifle build kit is a comprehensive set of components for assembling an AR-15 rifle chambered in 5.56 NATO. It typically includes a 5.56 barrel, upper receiver, handguard, gas system, bolt carrier group, charging handle, lower parts kit, buffer tube assembly, and stock. The kit works with AR-15 lower receivers and is compatible with standard AR-15 parts, making it ideal for custom builds focused on target shooting, hunting, or home defense.
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