This KAK Industries 13.9" upper assembly is designed for optimal suppressor integration with its pin-and-weld Hub-compatible muzzle device, achieving a 16" legal length. It features a durable 4150 CMV button-rifled barrel, a midlength gas system tuned for suppressed use, and a versatile MLOK rail. The package includes a BCG and charging handle, with an option for an upgraded KPEC dual-ejector bolt.
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