What should I expect when i go to register my launcher ? Would it be a AOW or DD ? I have full intentions of manufacturing some fun projectiles of the exploding nature , would this be covered under the launcher's stamp or do i need another? Is the 200.00 a one time deal ? Im not looking to buy comb b or c4 load and shoot but some pyrotechnic companies require some paper works to buy certain items and some companies that sell certain rounds require paper work . This is one thing I will be doing , i just want my *** covered when they come a knocking . Second thing , I thought one of the members on here said at one point that you did not need a license to buy explosives or to use them , just a permit . What are the requirements on that ?