So imagine this, right?
These are supposed to be like, disposable guns that you throw away and shit, yeah?
You're supposed to be able to just buy these things from vending machines, yeah?
What if there was a little vending machine that both sold these and also -recycled- them? So if you had a fully spent pop pop, or one that was filthy and gross, you could insert an old pop pop (deleting the old item) and get a fresh one for a reduced priced compared to buying a new one for a way lower price (ammunition and cleaning cost) This would let you 'reload' pop pops, or clean them if they're dirty, and it can have a cool little sequence where you old the old one it, the machine cleans it, sterilizes it, unloads and reloads it, and then pops it back out to you with a cute little 'Ding!'
And when you buy from it, it doesn't ask for ID but it stipulates, 'All people purchasing a firearm acknowledge that PopCorp is not liable for any damages and that the purchaser acknowledges they are a licensed firearm carrying citizen of Withmore. It is illegal to own a firearm in Withmore without a license. Do you have a license?' Then you hit 'yes' and it just sells you one. That way it covers it's own ass.
Suddenly Fixers want to buy up used pop pops, recycle 'em and have a fresh stock of firearms, it cleans up a ton of useless junk items and puts these guns back on the market for super hella cheap. Wowee, we all win.