R.I.P. cartridge
The R.I.P. cartridge (round irritant personnel) 12-gauge ammunition comprises cartridges filled with a mixture of micronized CS gas, an inert powder to add weight, and a further non-toxic powder which, on compression and friction, produces a large amount of carbon dioxide gas on exiting the barrel of the shotgun. These specialist rounds are used in situations such as hostage rescue, where a less-than-lethal approach is required in order to resolve an incident.