Reply To: Fx impact shroud
I did a temporary DIY shroud on my .22 with an LDC that I had laying around. Used a 22mm OD/20mm ID carbon fiber from Ebay for about $15 and cut it down. The LDC is a reflex-type so the CF slides a few inches inside and sealed with an o-ring. Effectiveness is ok, about the same as with the shroud closed.
On left is the original FX shoud, middle is the Daystate Airstream, and on the right is the Roy Kasten LDC mounted on the Impact.