I cannot help with a recommendation.

My thought though is why?

The Tempest is an old design of springer and the fun (for me at least) lies in using those iron sights which sure as hell make you work at looking where you aim, realise that the sights REALLY have to align on each shot and take into account how you hold it and press the trigger each time to maintain that alignment.

Anything else is just plain cheating with this pistol!