Trijicon MRO shroud
thingiverse
A shroud for Trijicon MRO model. I only tried this on my own sight. It fits but requires some fiddling and breaking in the threads. It may scratch the sight as you put it on so use with caution. Note: I don't own a printer so I had this printed by a printing service using pla+ at 0.2mm and 50%. Probably 30% or use TPU will be better for fitting and to avoid scratches, I can't really say.
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