i tried my xdm9 in a friends regular xd serpa it worked although i felt it rode a bit lose in the holster and about half a inch of the barrel stuck out the bottom. im still in search of a good holster for mine.
I also have a .45 with a 5.25" barrel. I checked out one of these holsters at my LGS, and the gun did indeed fit, very well, except that the end of the slide stuck out a good bit. Enough so that I was concerned about the front sight catching on a draw, and damaging it.
In the real world, that may not be a problem, but I was concerned.
It also wouldn't handle my Crimson Trace LG-448.
So, I called Serpa, spoke with a very nice, and very helpful CS person (Judy), and was told that they did not "for now" offer an extended version for the 5.25" barrel.
It IS a very nice holster though. Sure wish they had one for the 5.25" barrel, with a Crimson Trace LG-448 sight. Maybe if enough people called and asked about it...
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