Guarder Airtight Rubber for MARUI USP/USP Compact Manufacturer_Prometheus please refer to the "Options

please refer to the "Options & Supplies Compatibility Table"

Threaded metal outer barrel (Barrel tip end has Clockwise 16mm Thread )

Recoil Spring

Umarex H&K USP Compact Tactical GBB Pistol (White Marking Ver

9" for GBB - 150mm inner barrel

Guarder Airtight Rubber for MARUI USP/USP Compact Manufacturer_Prometheus please refer to the "OptionsFor MARUI USP USP Compact GBB Material: Rubber Color: Black Item No.: USP 07 * Toys only, please be safe use of air guns and must be follow the local law requirement for all airsoft use. * * Please note: installing parts assemble fitting airsoft gun will need intermediate knowledge; for expert or airsoft gunsmith. Please refer to your airsoft gunsmith for proper installation fitting. Fitting may be needed as the condition of each airsoft gun might be