Over the years we have been asked to design an air-powered net gun suitable for small animal capture, primarily birds and dogs. Here it is. The UltraNet. The UltraNet is powered by a single 16 gram CO2 canister. One shot per canister. When fired, the net is propelled by the kinetic energy deployed to each of the four corner-weights attached to the net. Our corner weights are rubber-padded to lessen the chance of potential injury.