Black powder can be a small explosive material comprised of potassium nitrate (saltpeter), sulfur and charcoal. Whilst made use of for a propellant in fireworks and pyrotechnics, It's also utilised in certain ammunition and muzzleloaders. A federal explosives license or permit is just not required to buy and use commercially https://greatgotfirearms.com/product/goex-2fg-black-powder-1-lb-in-stock/