"That... seems insane? Why would they do that?"

"Well, the crystal is built into the handle, so maybe it was a compromise in order to save on space... But that still doesn't justify it. It'd be a really shitty design if that was the reason." 

Jinx frowns. 

"Do you mind if I disassemble this? No promises I can get it back together again, it's a very strange piece, but I'm just dying to know what the hell is up with it." 

"Sure, go ahead. I'm curious too."

"Alright!" 

A few minutes of work with various screwdrivers, and the handle breaks in two, exposing a intricately-engraved crystal. 

Jinx blinks. "Holy shit, that's brilliant."

She peers at it. "What'd they do?"

"They've extended the rails onto the crystal itself, which means that at the very least this gun's got the accuracy and range of something a foot longer than it looks."

"Oooh, clever."

"Of course, the drawback is that you can't use regular, unengraved crystals... And if you put the has-to-be-symmetrical engraved crystal in upside-down, the gun'll generate a pulse of ball lightning in the grip that'll slag the rails and probably cost you a hand. Which is why you can't replace the ammo yourself as a grunt because you can't tell which way's up."

"Ouch. Well."

"It's perfectly safe so long as you get it reloaded by a pro, and the crystal's big enough that you can probably go a month between reloads. I might make that trade for an extra foot of gun, especially since I do know which way's up."

"How do you tell which way's up?"

"The rail design needs to match, and this symbol here -" she points "- needs to be at the start of the rails, which means the bottom of the grip. It's not actually that complex, but I wouldn't trust every single constable in the entire police force to be able to get it right ten times out of ten."

"Lucky me, falling in with an expert."

"Lucky us, more like. Anyway, let me just reassemble this and then we can start messing about with kits."

Ruava bounces excitedly.

Kits! Kits kits kits! It shouldn't take long for Ruava to have a few basic Zappers on the table.

She is, as ever, a quick learner. And it's really fun.

It is! Kits kits kits kits. Is the sun going down? Who cares, we have electric lights here, we were just getting into real customization - 

Ooh, customization!!

Whoa, these are some nice pieces for an amateur. Then again, she learned from the best...

She diiiiiiiiiid. Celebratory kisses?

The best kind of kisses.

Eeee.

"...So what's this 'pizza' thing you were so excited about a while ago?"

"Oh. Yes. Food! Food is important. We should remember food. Uh, top shelf of the fridge, let me get a pan going on the stove..."

She retrieves the mysterious artifact from the top shelf of the fridge.