Fulcrum shows his project making what he calls to be a cursed airsoft gun, perform better with HPA... "After all the grief and irritation that I've suffered from using (or attempting to use) the Specna Arms HK416C AEG. After all of the hair follicles I've lost, I've decided to give it ONE more go as a HPA DMR build using the printable system designed by KUBA, a 3D printed airsoft HPA engine that allows you to HPA certain airsoft guns on the cheap.

Now I already had the engine built (check out the MP5 HPA build for more details), but I design and build a higher power relay-based FCU that removes the voltage drop that restricts how much pressure the valve can reliably open at. And given how this turned out, my expectations are high."