Meet the Pavashot Penshot: a reloadable self defense pen that launches a PAVA aerosol powder to neutralize threats. It is loaded with 2.5 grams of 0.5% PAVA but you can go with something stronger. The Penshot has an effective range of 30ft.
This self defense pen has a multistage safety function. It uses N2 cartridges that work in -10 to 140F.
[where to get it]