>>6431333 here.Know what? it's looking good. It only needs some epoxy and two screws to affix the handle quite solidly to the shell around the internals.
It's not for small hands, but it works good enough for me as it's now (I do have big hands). All that remains is some cosmetic modification.
I'll likely add a longer, revolve-like barrel for the guns akimbo, cowboy look. The beauty if it all is that the water plunger is already a tube of the right diameter and includes pieces of plastic shaped to fit it for support. This water blaster has almost all the pieces needed to modify it already included in the package.