The Odin Works BBL 223 Wylde 16.1-inch barrel is compatible with both .223 Remington and 5.56 NATO ammunition, providing versatile performance. This barrel features a stainless steel tunable gas block for adjustable gas flow, enhancing reliability and function.Key FeaturesBarrel Length: Measures 16.1 inches for optimal maneuverability.Caliber/Gauge: Chambered in .223 Wylde, accommodating both .223 and 5.56 ammunition.Included Components: Comes with a stainless steel tunable gas block for customization.