That's not a bad idea, making a little spacer like that. i just want something that i can yank the barrel off at any time without needing some tools to make sure it'll come free.
I've got a few machine tools at my disposal, so I was thinking it would be simple to buzz the end cap's taper off flat, weld on a piece of steel tube that accepts the flashlight (with grooves in it and the flashlight so it stays put- a threaded end to hold it tight, and a little access port that I can run my thumb along to turn it on and off...
The thing is-I'm just too lazy lol
. I'm hoping that there's something nifty out there that seems to work well. If I do end up fabricating something, I'll keep everyone in the loop.