I've already got one 22/45 and was looking for a metal replacement frame for it. Or maybe building a complete competition one from scratch. Guess it just depends on the cost.
Been searching around a ton and its hard for me to believe that nobody makes after market frames.
There are no aftermarket frames of either type.
With the popularity of the TacSol barreled receivers, some enterprising fellow will surely begin making one.
Recently a frame went for like $275 on GB, or more than used guns sell for sometimes.