Airtac HPA M4 Mag Adapter for Hi Capa – MasterShot Custom
CowCow A01 Silencer Adapter for Tokyo Marui Hi-Capa/1911 (11mm CW to 14mm CCW) (Color: Rainbow) - US Airsoft, Inc.
CowCow A01 HI CAPA Silencer Adapter - Airsoft Extreme
Hi-Capa - Thread Adapter - Novritsch | USA
PDI-Japan TM MEU Silencer Adapter | Popular Airsoft: Welcome To The Airsoft World
COWCOW Tech A01 Silencer Adapter for Hi-CAPA
Nine Ball NEO SAS Silencer Adapter for Tokyo Marui MP5 Style AEG Airsoft SMG, Accessories & Parts, External Parts, Threaded Adapters - Evike.com Airsoft Superstore