VFC MCX Retro Arms Split Gearbox Build Part: 1

Hey guys! Today we're working on my personal build. VFC MCX with a Retro Arms split gearbox and lots of goodies inside. Part 1 is compression. Link to my file for the adapter I created: https://www.thingiverse.com/thing:693... Parts: Airtech Studios Piston Real Deal Airsoft 21.1mm nozzle Real Deal Airsoft Cylinder head Real Deal Airsoft tappet return spring Real Deal Airsoft Piston Head SHS/Rocket tappet plate SHS/Rocket 3/4 cylinder Retro Arms Gearbox Shell Custom 3d printed retro Arms quick change spring adapter for MCX