Yes, it can be legal to make a silencer. For everything Form-1, from silencer designs that are easily made, to filing forms with the BATF, to 3D modeling. Remember, you must have an approved BATF Form-1 to make a silencer. All NFA laws apply.
Hello everyone! This is an amazing build! The beauty of the design is compelling. I would love to scale this to a 7mm mag rifle. What rules of thumb or math did you use for the build. I would love to scale this design for my application. I can handle any math you throw at me. (Just fyi) I'm an also Architect by profession and feel the need to "leagaly" make a suppressor for my hunting rifle. I love the technical aspect of this kind of designing. I am still learning the basic principals behinds the different suppressor designs. I'm way over my head right now, but hope to become proficient within the year. Any help is appreciated. What should I study in regards to this type of suppressor?