How To Build A .22 Silencer - http://www.offthegridnews.com/2014/03/27/how-to-build-a-22-silencer/
How to build a .22 silencer
How to make a 22 silencer suppressor. Homemade 22 Rifle Silencer
Home made .22 LR Silencer Model: CNC2000
Econo-Can: A $55 Suppressor don't laugh it works. And it's home built and legal. Throw some paint on it to make it look better. It's performance will blow you away. Or better said blow away something very quietly.
22 Silencer | The 22 Sparrow Gun Suppressor from Silencerco
Improvised Suppressors for .22 Rimfire - YouTube
Adventures with a .22 Silencer: The SilencerCo Sparrow 22 | OutdoorHub