Originally Posted by ToRN
GBBRs do not use HPA, that's a paintball thing. The gas is stored in the mags, and there is no way to use external gas....yet.
Yes, but I see no reason why you can't use HPA witht he Co2 Adapter on.
For my M203 I've used and tested Duster Gas, HPA, Propane & Co2.
All work fine. Co2 is the best bang though.
The top half screws right into an HPA or CO2 tank.