the hammer can use a 650? how does that thing fit in there lol
With extension tubes under the button. In 18650 mode it holds and looks silly, but doable. It ends up looking like a right angle. lol
You can flip the caps so the extension tubes and battery are under the atty to maintain the pipe look, but it requires a spacer under the switch to make contact with the tube and fire. Also, the tubes don't quite screw down flush at the base assembled this way, but it's not terribly noticeable considering the way it interfaces with the base.
I recently won one of these, and absolutely love it.
Apparently it can be a bit of a gamble with some significantly horrible voltage drop on the 510 cap. I received an Hcigar model, and I haven't noticed any voltage drop at all, which is good enough for me. Others have experienced voltage drop so bad it's completely unusable. (Tobeco model?) ( > 1Ω drop)
There are fixes for that, and worth it IMO if you get a bad one.
It's a great little thing to hold and vape and is one heavy solid chunk of steel. (can double as a blunt force weapon)