Starting a gun manufacturing company and expecting not to get charged with a crime is a bit absurd. Pretending that it's totally fine because it's "for hunting" not "murder" because guns are special... is likewise absurd.
Having a tool to shoot someone is a right written into the US constitution. There are a variety of circumstances where you are within your rights to use this deadly force.
Tools to hide the source or destination of funds, i.e. to launder money, are not legal anywhere and explicitly illegal in various ways. Providing them as a service to others is explicitly illegal.
Building, selling, owning, and using a gun are all legal in general, only specific ways of doing those things are not.
"legal" != "legitimate". the Iraq war was legal. banks turning a profit off the 08 crash was legal. slavery was legal. The constitution was written in the dark ages by folks that thought slavery was A-OK and it's a dead document. your government (ours,I guess, if you wanted to get pedantic) sucks, dude.
