First time posting,
Disregarding the why on a shadow 2, I had a theory, and not sure if it'd work. To limit the amount of machining and custom work, would it be possible to run a TS/TS2/TSO barrel and guide rod on a shadow 2? Why? The shadow 2 barrel is 4.8", the TS and such are 5.2". The guide rod is also approx 1/4" longer. Thereby, if you threaded the remaining .40" barrel in say, a tanfoglio thread pitch (rather than 1/2x28), you could run a tanfoglio or similar open comp on a shadow 2, while utilizing the guide rod to prevent the comp from spinning. All the while, your slide and frame remain untouched...sans some fitting on the comp if it interferes with the frame/rail portion. This way, your only machining cost could be for threading the barrel.
More or less, it creates a budget czechmate-esq comp, without needing to worry about the cone, slide stroke, or modifying the slide or frame.
Lemme know what you think