Are you going to convert your Marauder to a regulated bottle gun?
We have the Evanix 480cc Carbon Fiber HPA Bottle. It has a max fill pressure of 250bar/3625psi. M18-1.5 thread fits: Air Force Condor, Talon; Daystate; FX Airguns. Weight is only 410gms/14 3/8oz Learn More, visit AirTanksPlus.com