They do not make a 1 piece for that model Goofy. weaver bases are the only way.
As an alternative to a scope, my recommendation, especially for that model is a good fine peep sight and a fine blade up front. Even 'old' eyesight can focus more clearly on an aperture peep set up. and you don't have bolt to scope clearance issues.
But that's just an alternative that I myself prefer. it is by no means a better alternative.