www.pyramydair.com Airguns of Arizona is good, too. I have many air guns, but no .20s. I had one(a Beeman P1) but gave it away. I have a 9mm airgun that puts a 60something grain pellet through 2X4s. I have a couple of .177s, mostly for the kids. I prefer .22s. Last time I had to dispatch an Opossum, I used a .22 pellet rifle.