Here's a Frankenstein build I just did, which has become a money pit, and I so regret it.
I think it's running right now, but I'd have been better off starting with a beater Mil-Spec and having a pro mod it for me. I did that years ago and foolishly sold the gun. I miss it so much, I thought I could recreate it. But I got that SA Mil-Spec for $160 11 years ago, just missing its barrel. So I should have known I'd never be able to redo it for what I originally had into that gun. Anyway, it's a cool gun, just an expensive, PITA process.
Here's my Dan Wesson Valor, which is just amazing.
And here's the SIG I impulse bought when shopping for a Colt Competition.