A .223 build kit is a comprehensive set of parts designed for assembling an AR-15 rifle chambered in .223 Remington or 5.56 NATO. It typically includes the upper and lower receivers, barrel, handguard, bolt carrier group, charging handle, gas system, lower parts kit, buffer tube assembly, and stock or pistol brace. The .223 build kit works with AR-15 platforms and is compatible with magazines, sights, and other standard AR-15 components, making it ideal for DIY gun builders seeking a complete, customizable rifle solution.
