The Weapons category is one of the largest sections of this site. As such it contains a hundreds of firearm manuals. However, this section is not just about guns. In fact, there are multiple downloads covering archery, air guns, blades, and other weapons.
There are user manuals, gunsmith help, reloading data. This category even has blueprints and plans. As a result of the status of state and local law, it is possible that making some of the items found here would be a crime.
I don’t know the specifics of your laws, but I would not recommend committing a felony just to make a lot of noise. Much of the data contained in this section should be used for the acquisition of knowledge and entertainment only. Please don’t commit a crime.