Hi:
In my long ago era, I don't recall holsters for odd barrel lengths unless the holsters were custom made.
Manufacturers such as Buchemer and Hunter Holsters were four, and six inch.
I had a S&W Model 1950 Military .45 acp with a 5.5" barrel that I wanted to carry for a service revolver. I had to settle for a holster for a six inch barrel.
You might consider contacting "
[email protected]"or "El Paso Leather" for a "Tom Threeperson" style holster.
Jimmy