http://www.texshoemaker.com used to make (still does I think?) 6" L frame holsters in several models, mostly black. I bought one for my partner's 686 4" a couple decades ago. When I did, they said they could make for essentially any typical bbl length. I still see the same basic models listed on their site. And there are several to choose from, high, low, covered/uncovered trigger etc.
Sgt Lumpy - n0eq