Homemade pneumatic air-gun

YouTube caption: In this video clip I am going to show you my pneumatic gun that I assembled from some different plumbing aids and appliances.
I am pumping air into the reservoir to build pressure of approximately 7-8 bars. In place of any ammunition rounds I use the dart-shaped spikes!
The plastic bottles pumped with some compressed air can be used as the targets. When hitting the target, I added some flour therein to do the cool wow-trick.