I also use post-black. Works better for me than pre-black. Caswell's is the brand I use. Your parts look great!
I have a daughter. I tell her, "911 is what you dial after you're raped. 1911 is what you should have before they try."
Ill never put paint on another firearm.
I used Caswell Black Oxide for post dip.
American By Birth, Southern By the Grace Of God