I need a recommendation for a OWB leather holster for a S&W model 63–4 which has the 5” barrel. Any help would be appreciated. I’m having a difficult time finding anything.
Check out MTR Custom Leather, and call or email them if you see something you like.
They have the S&W Model 63 3-inch listed and do other 5-inch holsters, so I'm guessing a holster for your 63-4 5-inch is doable for these custom holster makers.