B& T SD-988010-2-US DT 9mm Silencer for HK MP5-SD and APC9-SDDesigned in Switzerland and built in the USA, the B& T QD SMG/PDW 9mm Silencer is constructed from Swiss imported materials to produce a high quality product. This silencer utilizes a direct thread design, so no tools are needed for installation. Compatible with the HK MP5-SD/ APC9-SD and comes in a pouch. Specifications: Material: AluminumTreatment: Hardcoat AnodizedMounting: Direct thread, M18x1 SD-typeCompatibility: D54SD, MP5SDColor: Black B& T DT 9mm Silencer for HK MP5-SD and APC9-SD SD-988010-2-US