Ken, if you just want to improve it for good plinking/hunting, all that's needed is to remove the hammer and stone&polish it. You'll be surprised how rough the surface is! Don't change the notch angle, just smooth it up. This makes a big improvement. I also replaced the stiff trigger spring with the Pentel Pencil spring (a popular trick), but couldn't really tell if that helped or not - it also required drilling the hole in the trigger guard a bit larger. The trigger/sear can be a PITA to reinstall, til you get the hang of it. Doing the hammer is easy, and all you really need. This'll save you $30 on the cost of Volquartzen's custom hammer.
The scope rail supplied is okay for basic shooting, but if you want something better, Weaver's TO9 rail is the popular unit. It allows you to use both rimfire dovetail rings or Weaver rings, and is more secure.
I'm using a set of Weaver see-thru rings that bolt directly to the receiver, and allow me to use the irons if desired.
I like the "rifle-style" stock and 22" barrel of my WallyWorld Special, and won't change it - though I would prefer walnut over the stained birch wood.
Hope this helps. :grin: