There was a listing a while back but can't find it. I broke my Stingray by stripping the threads on the base tube after a 2 story drop . Trying to find a low voltage drop, compact, non-telescoping, non-clone, bottom-fire tube mod for 18650 batteries. I won't do clones. I prefer a magnetic switch. Brass, stainless, copper doesn't matter as long as it's made well/works well. My Magneto isn't doing it for me and it's very tough to get ahold of a new Stingray.