The Smmerling LM4, 45ACP pocket pistol is still alive and available
This tiny 4+1 shot pistol is a manual loader
I spoke with both the owner of the company that produces these (American Derringer) and the man that actually builds them
There are several finishes available from polished to bead blasted, there are also several grip choices. These do alter price.
Sales are less than brisk as this hand made firearm sells for more than $4,000 depending on the options.
I am told that about 10 are sold per year.