Attach your bcar with “ex” threads to your gameface trion or dart zone blaster!
The original ex bcar barrel mounts are intended to be printed at .12mm, therefore so are these. They both need supports, touching build plate only. Print the dart zone adapter with the ex threads facing down, and the trion adapter with the ex threads facing up.
The author remixed this model.
I took the threads of the barrel mount and put them on the threads of the trion scar and the dart zone muzzle attachment point of the hardware free bcar.