French manufacturer of animal catchpole, Génia offers high-performance gas projectors in the hypodermic equipment category.
So, you will find in this category:
Also, gas hypodermic rifles can grant accessories, such as a telescopic sight or a laser pointer.
A priori, this type of propellant uses compressed carbon dioxide. Besides, it is stored in an interchangeable reserve.
Thus, the gas projector launches light syringes. Furthermore, these contain liquid maintained under pressure by a spring. So a small plastic shutter at the end of the needle ejects, upon impact, on the skin or leather of the animal. So it can release the liquid.
On the other hand, gas thruster has a minimum range of 40 meters. However, your manufacturer Génia recommends using it at a distance of 40 to 70 meters depending on the model.
Besides, the length of the barrel, telescopic and graduated, impact the shooting distance.
Eventually, the hypodermic syringe should attach to the muscle mass of the animal. So, you should aim for the neck, shoulder, or thigh.