I have done some "reading" on silencers and found references to shotgun silencers (believe it or not). I takes alot of paperwork to own a silencer but it is still legal to know how a silencer works and how to build it. As found quite: A good spear would work but most of us are not strong enough nor practiced enough to use it. There is also an atlatl. If you are serious about quiet hunting search the internet for primitive skills and follow the links to the hunting section.