I have a Gamo CFX that I got from someone on the forum. Can't remember whom. It has a fixed barrel with an under lever and is inherently accurate. Plus I can upgrade it with an aftermarket trigger that's supposedly very good. That's the one I'm thinking of upgrading. It came with a plastic muzzle device that kind of implies noise damping or muzzle weight, neither of which it did. But, since there was a smaller inner diameter tube inside of a sealed larger one, I drilled holes in the inner liner tube. Not surprisingly, it took the edge off of the normal firing noise, to the point my wife, in the house, no longer noticed when I was shooting it.