An interesting concept. A Class 2 Special Occupational Tax payer might, if he were so inclined, to examine the possibility of doing an experiment as to the noise reduction of commercial-grade cans to "homemade" varieties. At the very least, in addition to the academic information, if commercial suppressors were demonstrably better than anything available "homemade" or "homegrown", it would definitely do wonders for sales.
To clarify: Suppressors are legal in some states. BATF regulates them under the National Firearms Act (NFA). This does not mean that they are totally prohibited; just REGULATED, TAXED ALL UP THE WAZOO, and more difficult to acquire than just walking down to Walgreens and getting your film developed.
I understand Gemtech makes an excellent product, but with current Federal Law, some of the older-style suppressors must have parts replaced, and it is illegal to possess the replacement parts unless they are IN a suppressor, which means you have to have TWO, one for your gun, and another, technically registered as a suppressor, that is actually your replacement parts kit.
But it's best to ask a Class 3 (Dealer) Special Occupational Taxpayer, or a Class 2 (Manufacturer) Special Occupational Taxpayer, both who deal with NFA weapons (Machine Guns, Short Barreled Rifles, Short Barreled Shotguns, and Any Other Weapons) for the straight dope on this situation.
Honestly, if you know a Class 3 dealer in your area, don't be afraid to talk to him. Generally they don't bite. At least, none that I've met do. And they'll show you how to stay on the straight and narrow as far as legality, after all, their business depends on it.
And that's all I have to say about that.
Panz