What’s wrong with the existing shotguns? It not like the cops are using them so much they wear out.
The logic of destroying them is so absurd. Of course they’re going to end up in civilian hands: what else would a gun shop do with them? Sell them to another police department?
And they’re shotguns, the fuddiest of guns, not even on the (current) agenda for banning. Do police trade-in shotguns ever get used in crimes?