I took a call today. Here is a rough transcript.
"Hi it's Lisa here from New Zealand Safety in Penrose (a suburb in Auckland)"
"I have a policeman standing in front of me. He'd like to know what kind of filter he can use in his mask for Tear gas"
"He needs 10 canisters suitable for use with Tear gas"
So, I spoke to him and sorted him out (as they don't sell our Mil Spec filters). Bizarre. And now you understand why we don't need guns. We're not that sophisticated down here.