COWCOW OB1 5.1 Stainless Steel Threaded Outer Barrel for MARUI Hi-Capa 5.1 GBB ( .40 Marking )

Machined stainless steel construction Fixed design ( no tilting during blowback ) M11x1 RH female thread to accept muzzle attachments Suitable for Marui Hi-Capa 5.1 GBB pistols