Picked up one of these
https://www.blackdogmachinellc.net/holster-for-the-ruger-mark-series.aspx
And seems to be a very good holster. I would avoid going shorter than 4.4" bull barrels due to how low the front is cut to accommodate mounted optics and that low cut may be an issue on the various tapered barrels due to allowing wiggle room. Retention is via the trigger guard area molding.
On cans, either I got models crossed up or someone did a review that a Sparrow is 1" diameter and found out that notion was wrong.
Started looking at the holster and noticed it is very thick kydex(think Safariland 6xxx series thick material) and the barrel channel has 6 ribs sticking out so i decided to remove them and check fit. I started out using adjustable reamer by hand, but that was an exercise in futility trying to clip off the ribs(holster flex was one issue) so I used a Dremel sanding drum to remove them and the reamers to smooth it up some.
Can almost guarantee this will eliminate any warranty, but these are fairly overbuilr holsters so i dont expect any issues.
I got the low belt loop and would recommend sticking with it for use with a suppressor or longer barrel lengths and really doubt women with hips would be happy with the high ride loop altogether.
