If you would like to build one, buy a PVC pipe coupling and cut out a slice lengthwise. Then slowly heat it (if you heat too fast it will turn brown) and bend it to size. Bend it a bit smaller than you want it and let it harden (30 seconds or so). You can then drill your holes to match your handle. I used a dremel tool to sand the edges of the one I made. It is a pretty easy build and turns out looking just as good as a bought one, and holds my light tighter than one I bought. I am using it on a smaller light so I cut the PVC coupling down some, but may end up making another and leaving it full length. Total time involved to make one was about 5 minutes.
post pic please. I'd like to see it.
Thanks