Pepper BB’s in Airsoft

So a while back, when me and a buddy were first getting into airsoft, we found a deal on Amazon for a single shot shotgun and a bag of airsoft BBs. What’s weird is that the BB’s we got we’re coated in this powder than stung super bad and caused irritation. Now we assumed that this type of bb was banned from most fields, but fortunately, we were able to pass chronos with it so we used it anyways. You could tell it worked because rentals would start crying like babies. Anyways, after a few years we have both gotten better gear; I run umbrella armory and friend has a novritch ssg24. The pepper BBs ran out, so I was gonna ask if anyone on this sub knows a website that sells em. -thanks, tommy