The HK Clamping Sleeve is a precision-engineered component designed specifically for HK416 rifles with verified MR556A1 compatibility.HK 416 Clamping Sleeve ComponentEngineered for HK416 rifle systemsCompatible with MR556A1 modelsPrecision manufacturing to HK specificationsEssential component for proper firearm assemblyThis genuine HK component ensures proper fit and function in compatible rifle systems meeting the exacting standards required for professional and civilian applications.