Finally finished printing a carbine kit for my mk23. HPA adapter by Primary Airsoft, 310mm Crazy Jet Barrel, as well as all the other standard mk23 upgrades. : r/airsoft
MK23 M-Series Modular HPA Adapter Base
PULSE MK23 STTI/ASG M4
TM MK23/SSX23 M4 Adapter - Tapp Airsoft
STL file STANDARD MK23 to MP5 Adapter 🔫 ・3D print design to download・Cults
MK23 / SSX23 HPA/M4 adapter with magazine – Primary Airsoft
STL file MP5 HPA Adapter for Mk23 Marui/STTI 🗼・3D printable model to download・Cults
Nine Ball TM SOCOM MK23 Under Mount Base Ver.2 - Black (GG06-01) – airsoftgateway.com