Hi David,
In your rifle's current guise, no it won't. It has a 1/2" UNF female thread, so the barrel would need screw cutting. Now, if you end up buying one of them there namby pamby pffft guns, most of those will have the screw cut barrels, so it'll fit.
Much of the "noise" you get with a springer is mechanical noise. Especially when shooting it and various parts of your good self are in contact with the gun. Always a good idea to let someone shoot your gun whilst you stand a few feet away and listen to get an idea how "noisy" it really is. If the twang (if present) did start to bug you, the de-twang is routine and straightforward.
But, it must be said, nicely tuned, de-twanged and silenced = very quiet.
