Just so I can help out those who don't know (and don't get mad at me if you already do, I'm just trying to clear it up because it can be confusing), the M9A1 is completely different than any other Beretta. I'll explain..
The M9A1 has a picatinny rail, squared trigger guard, and lower reciever impressions. This is the difference just from the standard M9. The 92FS is a completely different gun. So much that it is made in Italy and the M9(A1) is made in the U.S.
In order to find a molded holster, you will need to get one that specifically fits the M9A1. I know for most of the officers that carry them on their hip, they actually have just M9 hips and they chip away or file down the area where the rail sits and it fits just fine.
If you have something on the rail, like a light or laser, it will not fit in any molded or most soft (even universal) holsters. I hip mine very rarely but when I do, I use a universal medium size pistol holder that does just fine. But for those looking for a hard molded (tacticool) hip, there are some companies making them now, like Blackhawk.
Hope I helped out some few.
Just in case, these models Beretta makes are all completely different guns all in their own way, sometimes only little differences:
Then the two obvious ones: