This is an original factory replacement part. Factory replacement parts are manufactured to the exact same specifications and tolerances and use the same manufacturing materials as the original parts which guarantees excellent fit and reliable operation. FeaturesIncludes screws for assemblyDisassembly and assembly may be required to replace part Some parts may require installation by a qualified gunsmith Fits: P89, P90, P89D, P90D, P89DAO 9mm Luger, 45 ACP