Thread: no license needed

Black powder explosive other just burns quickly. Let Darwin's theory sorry out the zip gun crowd... What component makes a firearm functional... The barrel, the bolt, the upper or lower... What if only the stock or magazine made it e cat - why would there be so many hoops for one buying an upper or lower? But can you purchase a 30rnd mag on the promise you own a troy pump or a ruger american and only that.....