Mernickle will, or at least in the past would, make one specifically for your gun/can.
https://www.mernickleholsters.com/I haven't checked, but my guess is that Rob Leahy at Simply Rugged will also work with you.
Simplyrugged.com
I have used an El Paso "Tanker" - suppressor hangs out the end but is workable with 1911s.
https://epsaddlery.com/?s=1942&post_type=productFWIW,
Paul