Thor Punch - Gas Powered Assault Device

This tactical weapon is built for mercenaries. A carbon dioxide cartridge is mounted in a solid palm grip which is coupled with a hollow spike/hollow arrowhead. When the fist -gripped punching aid connects with its target, a burst charge of CO2 gas is released into the puncture wound, maximizing the stopping power of the impact. The material of the item should be stainless or aluminum or carbon fiber or something reliable... this item should be a thing of beauty and respect that James Bond would be proud to carry. The design should be minimalist and rugged. The valves and components should be well thought out. The CO2 cylinder is a 25gram type. Some of my "back of the napkin" sketches are included in the attachments. Look forward to working with a good operator and intend to take the project further after several prototypes. I would like a CAD/CAM diagram so that it can be sent in for manufacture. Assistance to get 10+ prototypes manufactured would be appreciated. Any questions, feel free to email me, I will respond promptly.