They were cylinders of glass and metal, with tubing connecting parts. I am not certain how they opened, as they may have... exploded before I could examine them. But I could probably draw one, if you like.

[He is not going to admit the explosion was entirely his fault and that's what happens when you shoot technology you don't understand.]

It would be good for people to at least know how to defend themselves, yes. This place reminds me of the Zone, which was extremely dangerous to travel in without a weapon or two.