RT, I think your looking for something that is not out there. I took a look at the clips for the Euro style medical and I bet you can drill that hole larger to fit over the cigar threaded cap. You may have to turn the end barrel a touch smaller, but I bet that would work. There is just enough metal on the clip for that bigger hole.
My brother's friend in Michigan he was in a band with, just took an early buy out from the Detriot PD, I think he was watching over Lincoln Park, his name is Dennis Girrad, nice guy. Anthony