The build uses PVC pipes for both the barrel and the air tank ... the twin-reservoir design also acting as a useful shoulder mount. Charging the cannon is done via a Schrader valve, as you ...

Air compressors are handy for ... Start by unplugging the compressor. Then, open the drain valve at the bottom of the tank to depressurize it. Next, remove the 1/4-in. line going to the unloader ...