It is basically a FAS1-Magnum TL safe with an 8" extension on the front. The suppressor just goes through the end of the holster as it is not sewn together at the top. I will probably need to open it a little more for clearance.
I am still playing with it and haven't had a whole lot of time lately, but initially I put an 8" pvc extension on my Glock 17 and had plenty of room for clearance. I would guess that 8" to 9" suppressor length will work with it being this size. Could make it longer if needed, but I am trying to keep the cost down as much as possible.The holster could be moved about 1" rearward as well.
This is the holster. It will allow a rail mounted light as well.