T9.1 Aftermarket shrouds

After extensive search. I have yet to find aftermarket shroud options for the T9.1 other than opsgears mp7 kit. And even that from what I hear does not fit on the .1 due to the backblock air. Has anyone been able to find or mod their own shroud? I saw a thread where a guy used an m4 sir shroud (from an airsoft company iirc) that fit albeit with a gap between the barrel and body. It was seemingly secure and without wobble. His plan was to use it to finish his project X7 M4 SIR. This led me to believe an aftermarket X7 shroud could fit though it may require some minor modding.*